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Papers by Anjali Devi

Cryptogam biodiversity and assesment, Jun 25, 2017

Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reser... more Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reserve, Andhra Pradesh. The lichen species are identified as Heterodermia diademata (Taylor) D.D. Awasthi, Parmotrema andinum (Müll. Arg.) Hale, P. grayanum (Hue) Hale, P. nilgherrense (Nyl.) Hale, P. praesorediosum (Nyl.) Hale, P. reticulatum (Taylor) M. Choisy, P. tinctorum (Despr. ex Nyl.) Hale, Parmelinella wallichiana (Taylor) Elix and Hale, Ramalina conduplicans Vain. and Usnea baileyi (Stirt.) Zahlbr. A total of 30 crude extracts in three different solvents such as 2-Propanol, Methanol and Water were prepared. The preliminary phytochemical screening revealed the occurrence of tannins, saponins, glycosides, proteins and triterpenoides in all the species while alkaloids, flavonoids, carbohydrates and steroids were found in some of the species. Aqueous extracts of all the species did not contain alkaloids, flavonoids, carbohydrates and steroids. Out of 10 species glycosides was present in 8 species, followed by presence of tannins, alkaloids and triterpenoides in 6 species. Flavonoids and proteins were found in 5 species and saponins and carbohydrates were found in 3 species only. Steroides were reported in P. reticulatum and P. andinum. Alkaloids, carbohydrates, flavonoids, glycosides, proteins, steroids, tannins and triterpenoides were reported in 2-propanol and methanolic extracts. Saponins were completely lacking in 2-propanol extracts of all the species. This is the first report with detailed phytochemicals analysis of lichens from Eastern Ghats of India.

Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. m... more Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. microspora has UV+ thallus, apothecial disc pruinose, UV-, 16-ascospores per ascus, smaller (4.5–7.0×1.5–2.3 µm) in size, atranorin, norstictic acid and lichexanthone in chemistry.

The present study was conducted to evaluate the In-vitro antimicrobial activity of 2-Propanol, ac... more The present study was conducted to evaluate the In-vitro antimicrobial activity of 2-Propanol, acetone, methanol, petroleum ether and aqueous extracts of Parmotrema andinum (Müll. Arg.) Hale against each eleven human pathogenic bacteria and fungal pathogens. Secondary compounds of the species were extracted with Soxhlet apparatus and antimicrobial activity was carried out by using Kirby-Bauer disc diffusion method. The extracts were found more effective against all bacterial and fungal pathogens. Among the eleven bacterial pathogens highest zone of inhibition with 2-propanol was recorded against Corynebacterium rubrum (10.3±0.5), Salmonella typhimurium (10.0±2.6) and Pseudomonas aeruginosa (9.6±1.5) followed by lowest inhibition zone recorded in Enterobacter cloacae (7.3±0.5) and Salmonella abony (7.3±0.5). The highest and lowest zones of inhibitions with acetone extract were reported against Enterobacter cloacae (8.3±2.3) and Salmonella abony (4.6±4.0). The highest and lowest zones...

Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. m... more Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. microspora has UV+ thallus, apothecial disc pruinose, UV-, 16-ascospores per ascus, smaller (4.5–7.0×1.5–2.3 µm) in size, atranorin, norstictic acid and lichexanthone in chemistry.

The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayal... more The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayalaseema region of Andhra Pradesh is extensively explored. The study revealed the occurrence of 46 species of lichens from 14 localities. Out of total 28 species are recorded for the first time from the state and the list also included 8 taxa endemic to India. A total of 9 species recorded from Siddavatam fort is the first ever record of lichens from any historical monuments in Andhra Pradesh. Among the different growth forms, the crustose lichens exhibited the maximum diversity with 21 species followed by 14 species of foliose, 10 squamulose and a single species of leprose form. The saxicolous (both growing on rocks and limeplaster of monument) species exhibited the maximum diversity represented by 31 species followed by 15 corticolous species. The members of dominant lichen families Physciaceae and Parmeliaceae showed their diversity with 14 and eight species under 6 and 3 genus respectively. Within the YSR district the forests of Guvvala Cheruvu Hills are rich in lichen diversity.

Cryptogam Biodiversity and Assessment, 2017

Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reser... more Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reserve, Andhra Pradesh. The lichen species are identified as Heterodermia diademata (Taylor) D.D. Awasthi, Parmotrema andinum (Müll. Arg.) Hale, P. grayanum (Hue) Hale, P. nilgherrense (Nyl.) Hale, P. praesorediosum (Nyl.) Hale, P. reticulatum (Taylor) M. Choisy, P. tinctorum (Despr. ex Nyl.) Hale, Parmelinella wallichiana (Taylor) Elix and Hale, Ramalina conduplicans Vain. and Usnea baileyi (Stirt.) Zahlbr. A total of 30 crude extracts in three different solvents such as 2-Propanol, Methanol and Water were prepared. The preliminary phytochemical screening revealed the occurrence of tannins, saponins, glycosides, proteins and triterpenoides in all the species while alkaloids, flavonoids, carbohydrates and steroids were found in some of the species. Aqueous extracts of all the species did not contain alkaloids, flavonoids, carbohydrates and steroids. Out of 10 species glycosides was present i...

Journal on New Biological Reports, 2015

Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. m... more Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. microspora has UV+ thallus, apothecial disc pruinose, UV-, 16-ascospores per ascus, smaller (4.5-7.0×1.5-2.3 µm) in size, atranorin, norstictic acid and lichexanthone in chemistry.

The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayal... more The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayalaseema region of Andhra Pradesh is extensively explored. The study revealed the occurrence of 46 species of lichens from 14 localities. Out of total 28 species are recorded for the first time from the state and the list also included 8 taxa endemic to India. A total of 9 species recorded from Siddavatam fort is the first ever record of lichens from any historical monuments in Andhra Pradesh. Among the different growth forms, the crustose lichens exhibited the maximum diversity with 21 species followed by 14 species of foliose, 10 squamulose and a single species of leprose form. The saxicolous (both growing on rocks and lime-plaster of monument) species exhibited the maximum diversity represented by 31 species followed by 15 corticolous species. The members of dominant lichen families Physciaceae and Parmeliaceae showed their diversity with 14 and eight species under 6 and 3 genus respect...

The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayal... more The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayalaseema region of Andhra Pradesh is extensively explored. The study revealed the occurrence of 46 species of lichens from 14 localities. Out of total 28 species are recorded for the first time from the state and the list also included 8 taxa endemic to India. A total of 9 species recorded from Siddavatam fort is the first ever record of lichens from any historical monuments in Andhra Pradesh. Among the different growth forms, the crustose lichens exhibited the maximum diversity with 21 species followed by 14 species of foliose, 10 squamulose and a single species of leprose form. The saxicolous (both growing on rocks and limeplaster of monument) species exhibited the maximum diversity represented by 31 species followed by 15 corticolous species. The members of dominant lichen families Physciaceae and Parmeliaceae showed their diversity with 14 and eight species under 6 and 3 genus respectively. Within the YSR district the forests of Guvvala Cheruvu Hills are rich in lichen diversity.

Journal of Threatened Taxa, 2014

Additions to lichen mycota of Andhra Pradesh Mohabe et al. 6123 biatorine to lecidine, brownish t... more Additions to lichen mycota of Andhra Pradesh Mohabe et al. 6123 biatorine to lecidine, brownish to black margin; K+ purple epihymenium, absence of algal cells in exciple; 8-spored asci; hyaline, polaribilocular, elongate to ellipsoidal, 12.0-14.0×8.0-9.5 µm ascospores and with anthraquinons as lichen substance. The species is known from the tropical regions of the world and in India it was earlier reported from Madhya Pradesh, Tamil Nadu and West Bengal. 4. Dimelaena tenuis (Müll. Arg.) H. Mayrhofer & Wipple (Physciaceae) Image 1D. Specimen examined: 2178 (YVUH), 15.vii.12, on rock, backside of Javakaladinnae, Gorantla, Anantapur District, Andhra Pradesh, coll. A. Madhusudhana Reddy. This effigurate, squamulose species, found growing tightly on rock and characterized by yellowish-green to greenish-brown central part and greenish to yellowish or brownish marginal area, rhizines lacking; innate to sessile, rounded to irregular, 0.3-0.7 mm in diameter, biatorine to lecanorine apothecia, dark brown to brown black disc; 8-spored asci; brown, 1 septate, 9.0-11.0×4.0-7.0 µm ascospores and with gyrophoric acid as lichen substance. The species is known from North America and in India it was earlier reported from Madhya Pradesh.

Journal on New Biological Reports, 2015

The present study was conducted to evaluate the In-vitro antimicrobial activity of 2-Propanol, ac... more The present study was conducted to evaluate the In-vitro antimicrobial activity of 2-Propanol, acetone, methanol, petroleum ether and aqueous extracts of Parmotrema andinum (Müll. Arg.) Hale against each eleven human pathogenic bacteria and fungal pathogens. Secondary compounds of the species were extracted with Soxhlet apparatus and antimicrobial activity was carried out by using Kirby-Bauer disc diffusion method. The extracts were found more effective against all bacterial and fungal pathogens. Among the eleven bacterial pathogens highest zone of inhibition with 2-propanol was recorded against Corynebacterium rubrum (10.3±0.5), Salmonella typhimurium (10.0±2.6) and Pseudomonas aeruginosa (9.6±1.5) followed by lowest inhibition zone recorded in Enterobacter cloacae (7.3±0.5) and Salmonella abony (7.3±0.5). The highest and lowest zones of inhibitions with acetone extract were reported against Enterobacter cloacae (8.3±2.3) and Salmonella abony (4.6±4.0). The highest and lowest zones...

A new rapid, convenient and sensitive electrochemical method based on a gold nanoparticles modifi... more A new rapid, convenient and sensitive electrochemical method based on a gold nanoparticles modified ITO (Au/ITO) electrode is described for the detection of dopamine and serotonin in the presence of a high concentration of ascorbic acid. The electrocatalytic response was evaluated by differential pulse voltammetry (DPV) and the modified electrode exhibited good electrocatalytic properties towards dopamine and serotonin oxidation with a peak potential of 70 mV and 240 mV lower than that at the bare ITO electrode, respectively. The selective sensing of dopamine is further improved by applying square wave voltammetry (SWV) which leads to the lowering of its detection limit. A similar effect on the detection limit of serotonin was observed on using SWV. Linear calibration curves are obtained in the range 1.0 × 10 −9-5.0 × 10 −4 M and 1.0 × 10 −8-2.5 × 10 −4 M with a detection limit of 0.5 nM and 3.0 nM for dopamine and serotonin, respectively. The Au/ITO electrode efficiently determines both the biomolecules simultaneously, even in the presence of a large excess of ascorbic acid. The adequacy of the developed method was evaluated by applying it to the determination of the content of dopamine in dopamine hydrochloride injections. The proposed procedure was also successfully applied to simultaneously detect dopamine and serotonin in human serum and urine.

Journal on New Biological Reports, 2015

Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. m... more Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. microspora has UV+ thallus, apothecial disc pruinose, UV-, 16-ascospores per ascus, smaller (4.5-7.0×1.5-2.3 µm) in size, atranorin, norstictic acid and lichexanthone in chemistry.

International Journal of Speech Technology

Cryptogam Biodiversity and Assessment

The district revealed the occurrence of 51 species belonging to 22 genera under 14 families. The ... more The district revealed the occurrence of 51 species belonging to 22 genera under 14 families. The lichen biota included 15 new records to Andhra Pradesh and five species endemic to India. Among the different growth forms foliose and crustose exhibit the maximum diversity represented by 22 and 21 species followed by 7 squamulose and 2 leprose lichens. Based on the habitat preference corticolous lichens showed maximum diversity represented by 32 species followed by 21 saxicolous and two ramicolous species while four species found growing on more than one substrates. Among the different families, Caliciaceae is the largest family which is consisting of 13 species under the five genera. Among the seven localities surveyed in the district, Gundumala and Penukonda hills exhibited maximum diversity of lichens represented by 34 and 26 species. Pyxine petricola Nyl. is widely distributed and recorded from 6 localities of the district. This species can be used for pollution monitoring studies ...

Cryptogam Biodiversity and Assessment , 2017

Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reser... more Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reserve, Andhra Pradesh. The lichen species are identified as Heterodermia diademata (Taylor) D.D. Awasthi, Parmotrema andinum (Müll. Arg.) Hale, P. grayanum (Hue) Hale, P. nilgherrense (Nyl.) Hale, P. praesorediosum (Nyl.) Hale, P. reticulatum (Taylor) M. Choisy, P. tinctorum (Despr. ex Nyl.) Hale, Parmelinella wallichiana (Taylor) Elix & Hale, Ramalina conduplicans Vain. and Usnea baileyi (Stirt.) Zahlbr. A total of 30 crude extracts in three different solvents such as 2-Propanol, Methanol and Water were prepared. The preliminary phytochemical screening revealed the occurrence of tannins, saponins, glycosides, proteins and triterpenoides in all the species while alkaloids, flavonoids, carbohydrates and steroids were found in some of the species. Aqueous extracts of all the species did not contain alkaloids, flavonoids, carbohydrates and steroids. Out of 10 species glycosides was present in 8 species, followed by presence of tannins, alkaloids and triterpenoides in 6 species. Flavonoids and proteins were found in 5 species and saponins and carbohydrates were found in 3 species only. Steroides were reported in P. reticulatum and P. andinum. Alkaloids, carbohydrates, flavonoids, glycosides, proteins, steroids, tannins and triterpenoides were reported in 2-propanol and methanolic extracts. Saponins were completely lacking in 2-propanol extracts of all the species. This is the first report with detailed phytochemicals analysis of lichens from Eastern Ghats of India.

Journal of Threatened Taxa, 2014

Cryptogam biodiversity and assesment, Jun 25, 2017

Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reser... more Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reserve, Andhra Pradesh. The lichen species are identified as Heterodermia diademata (Taylor) D.D. Awasthi, Parmotrema andinum (Müll. Arg.) Hale, P. grayanum (Hue) Hale, P. nilgherrense (Nyl.) Hale, P. praesorediosum (Nyl.) Hale, P. reticulatum (Taylor) M. Choisy, P. tinctorum (Despr. ex Nyl.) Hale, Parmelinella wallichiana (Taylor) Elix and Hale, Ramalina conduplicans Vain. and Usnea baileyi (Stirt.) Zahlbr. A total of 30 crude extracts in three different solvents such as 2-Propanol, Methanol and Water were prepared. The preliminary phytochemical screening revealed the occurrence of tannins, saponins, glycosides, proteins and triterpenoides in all the species while alkaloids, flavonoids, carbohydrates and steroids were found in some of the species. Aqueous extracts of all the species did not contain alkaloids, flavonoids, carbohydrates and steroids. Out of 10 species glycosides was present in 8 species, followed by presence of tannins, alkaloids and triterpenoides in 6 species. Flavonoids and proteins were found in 5 species and saponins and carbohydrates were found in 3 species only. Steroides were reported in P. reticulatum and P. andinum. Alkaloids, carbohydrates, flavonoids, glycosides, proteins, steroids, tannins and triterpenoides were reported in 2-propanol and methanolic extracts. Saponins were completely lacking in 2-propanol extracts of all the species. This is the first report with detailed phytochemicals analysis of lichens from Eastern Ghats of India.

Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. m... more Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. microspora has UV+ thallus, apothecial disc pruinose, UV-, 16-ascospores per ascus, smaller (4.5–7.0×1.5–2.3 µm) in size, atranorin, norstictic acid and lichexanthone in chemistry.

The present study was conducted to evaluate the In-vitro antimicrobial activity of 2-Propanol, ac... more The present study was conducted to evaluate the In-vitro antimicrobial activity of 2-Propanol, acetone, methanol, petroleum ether and aqueous extracts of Parmotrema andinum (Müll. Arg.) Hale against each eleven human pathogenic bacteria and fungal pathogens. Secondary compounds of the species were extracted with Soxhlet apparatus and antimicrobial activity was carried out by using Kirby-Bauer disc diffusion method. The extracts were found more effective against all bacterial and fungal pathogens. Among the eleven bacterial pathogens highest zone of inhibition with 2-propanol was recorded against Corynebacterium rubrum (10.3±0.5), Salmonella typhimurium (10.0±2.6) and Pseudomonas aeruginosa (9.6±1.5) followed by lowest inhibition zone recorded in Enterobacter cloacae (7.3±0.5) and Salmonella abony (7.3±0.5). The highest and lowest zones of inhibitions with acetone extract were reported against Enterobacter cloacae (8.3±2.3) and Salmonella abony (4.6±4.0). The highest and lowest zones...

Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. m... more Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. microspora has UV+ thallus, apothecial disc pruinose, UV-, 16-ascospores per ascus, smaller (4.5–7.0×1.5–2.3 µm) in size, atranorin, norstictic acid and lichexanthone in chemistry.

The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayal... more The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayalaseema region of Andhra Pradesh is extensively explored. The study revealed the occurrence of 46 species of lichens from 14 localities. Out of total 28 species are recorded for the first time from the state and the list also included 8 taxa endemic to India. A total of 9 species recorded from Siddavatam fort is the first ever record of lichens from any historical monuments in Andhra Pradesh. Among the different growth forms, the crustose lichens exhibited the maximum diversity with 21 species followed by 14 species of foliose, 10 squamulose and a single species of leprose form. The saxicolous (both growing on rocks and limeplaster of monument) species exhibited the maximum diversity represented by 31 species followed by 15 corticolous species. The members of dominant lichen families Physciaceae and Parmeliaceae showed their diversity with 14 and eight species under 6 and 3 genus respectively. Within the YSR district the forests of Guvvala Cheruvu Hills are rich in lichen diversity.

Cryptogam Biodiversity and Assessment, 2017

Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reser... more Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reserve, Andhra Pradesh. The lichen species are identified as Heterodermia diademata (Taylor) D.D. Awasthi, Parmotrema andinum (Müll. Arg.) Hale, P. grayanum (Hue) Hale, P. nilgherrense (Nyl.) Hale, P. praesorediosum (Nyl.) Hale, P. reticulatum (Taylor) M. Choisy, P. tinctorum (Despr. ex Nyl.) Hale, Parmelinella wallichiana (Taylor) Elix and Hale, Ramalina conduplicans Vain. and Usnea baileyi (Stirt.) Zahlbr. A total of 30 crude extracts in three different solvents such as 2-Propanol, Methanol and Water were prepared. The preliminary phytochemical screening revealed the occurrence of tannins, saponins, glycosides, proteins and triterpenoides in all the species while alkaloids, flavonoids, carbohydrates and steroids were found in some of the species. Aqueous extracts of all the species did not contain alkaloids, flavonoids, carbohydrates and steroids. Out of 10 species glycosides was present i...

Journal on New Biological Reports, 2015

Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. m... more Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. microspora has UV+ thallus, apothecial disc pruinose, UV-, 16-ascospores per ascus, smaller (4.5-7.0×1.5-2.3 µm) in size, atranorin, norstictic acid and lichexanthone in chemistry.

The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayal... more The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayalaseema region of Andhra Pradesh is extensively explored. The study revealed the occurrence of 46 species of lichens from 14 localities. Out of total 28 species are recorded for the first time from the state and the list also included 8 taxa endemic to India. A total of 9 species recorded from Siddavatam fort is the first ever record of lichens from any historical monuments in Andhra Pradesh. Among the different growth forms, the crustose lichens exhibited the maximum diversity with 21 species followed by 14 species of foliose, 10 squamulose and a single species of leprose form. The saxicolous (both growing on rocks and lime-plaster of monument) species exhibited the maximum diversity represented by 31 species followed by 15 corticolous species. The members of dominant lichen families Physciaceae and Parmeliaceae showed their diversity with 14 and eight species under 6 and 3 genus respect...

The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayal... more The lichen mycota of ecologically interesting and biodiversity rich YSR district located in Rayalaseema region of Andhra Pradesh is extensively explored. The study revealed the occurrence of 46 species of lichens from 14 localities. Out of total 28 species are recorded for the first time from the state and the list also included 8 taxa endemic to India. A total of 9 species recorded from Siddavatam fort is the first ever record of lichens from any historical monuments in Andhra Pradesh. Among the different growth forms, the crustose lichens exhibited the maximum diversity with 21 species followed by 14 species of foliose, 10 squamulose and a single species of leprose form. The saxicolous (both growing on rocks and limeplaster of monument) species exhibited the maximum diversity represented by 31 species followed by 15 corticolous species. The members of dominant lichen families Physciaceae and Parmeliaceae showed their diversity with 14 and eight species under 6 and 3 genus respectively. Within the YSR district the forests of Guvvala Cheruvu Hills are rich in lichen diversity.

Journal of Threatened Taxa, 2014

Additions to lichen mycota of Andhra Pradesh Mohabe et al. 6123 biatorine to lecidine, brownish t... more Additions to lichen mycota of Andhra Pradesh Mohabe et al. 6123 biatorine to lecidine, brownish to black margin; K+ purple epihymenium, absence of algal cells in exciple; 8-spored asci; hyaline, polaribilocular, elongate to ellipsoidal, 12.0-14.0×8.0-9.5 µm ascospores and with anthraquinons as lichen substance. The species is known from the tropical regions of the world and in India it was earlier reported from Madhya Pradesh, Tamil Nadu and West Bengal. 4. Dimelaena tenuis (Müll. Arg.) H. Mayrhofer & Wipple (Physciaceae) Image 1D. Specimen examined: 2178 (YVUH), 15.vii.12, on rock, backside of Javakaladinnae, Gorantla, Anantapur District, Andhra Pradesh, coll. A. Madhusudhana Reddy. This effigurate, squamulose species, found growing tightly on rock and characterized by yellowish-green to greenish-brown central part and greenish to yellowish or brownish marginal area, rhizines lacking; innate to sessile, rounded to irregular, 0.3-0.7 mm in diameter, biatorine to lecanorine apothecia, dark brown to brown black disc; 8-spored asci; brown, 1 septate, 9.0-11.0×4.0-7.0 µm ascospores and with gyrophoric acid as lichen substance. The species is known from North America and in India it was earlier reported from Madhya Pradesh.

Journal on New Biological Reports, 2015

The present study was conducted to evaluate the In-vitro antimicrobial activity of 2-Propanol, ac... more The present study was conducted to evaluate the In-vitro antimicrobial activity of 2-Propanol, acetone, methanol, petroleum ether and aqueous extracts of Parmotrema andinum (Müll. Arg.) Hale against each eleven human pathogenic bacteria and fungal pathogens. Secondary compounds of the species were extracted with Soxhlet apparatus and antimicrobial activity was carried out by using Kirby-Bauer disc diffusion method. The extracts were found more effective against all bacterial and fungal pathogens. Among the eleven bacterial pathogens highest zone of inhibition with 2-propanol was recorded against Corynebacterium rubrum (10.3±0.5), Salmonella typhimurium (10.0±2.6) and Pseudomonas aeruginosa (9.6±1.5) followed by lowest inhibition zone recorded in Enterobacter cloacae (7.3±0.5) and Salmonella abony (7.3±0.5). The highest and lowest zones of inhibitions with acetone extract were reported against Enterobacter cloacae (8.3±2.3) and Salmonella abony (4.6±4.0). The highest and lowest zones...

A new rapid, convenient and sensitive electrochemical method based on a gold nanoparticles modifi... more A new rapid, convenient and sensitive electrochemical method based on a gold nanoparticles modified ITO (Au/ITO) electrode is described for the detection of dopamine and serotonin in the presence of a high concentration of ascorbic acid. The electrocatalytic response was evaluated by differential pulse voltammetry (DPV) and the modified electrode exhibited good electrocatalytic properties towards dopamine and serotonin oxidation with a peak potential of 70 mV and 240 mV lower than that at the bare ITO electrode, respectively. The selective sensing of dopamine is further improved by applying square wave voltammetry (SWV) which leads to the lowering of its detection limit. A similar effect on the detection limit of serotonin was observed on using SWV. Linear calibration curves are obtained in the range 1.0 × 10 −9-5.0 × 10 −4 M and 1.0 × 10 −8-2.5 × 10 −4 M with a detection limit of 0.5 nM and 3.0 nM for dopamine and serotonin, respectively. The Au/ITO electrode efficiently determines both the biomolecules simultaneously, even in the presence of a large excess of ascorbic acid. The adequacy of the developed method was evaluated by applying it to the determination of the content of dopamine in dopamine hydrochloride injections. The proposed procedure was also successfully applied to simultaneously detect dopamine and serotonin in human serum and urine.

Journal on New Biological Reports, 2015

Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. m... more Stigmatochroma microspora is described as new species which is close to S. adaucta. However, S. microspora has UV+ thallus, apothecial disc pruinose, UV-, 16-ascospores per ascus, smaller (4.5-7.0×1.5-2.3 µm) in size, atranorin, norstictic acid and lichexanthone in chemistry.

International Journal of Speech Technology

Cryptogam Biodiversity and Assessment

The district revealed the occurrence of 51 species belonging to 22 genera under 14 families. The ... more The district revealed the occurrence of 51 species belonging to 22 genera under 14 families. The lichen biota included 15 new records to Andhra Pradesh and five species endemic to India. Among the different growth forms foliose and crustose exhibit the maximum diversity represented by 22 and 21 species followed by 7 squamulose and 2 leprose lichens. Based on the habitat preference corticolous lichens showed maximum diversity represented by 32 species followed by 21 saxicolous and two ramicolous species while four species found growing on more than one substrates. Among the different families, Caliciaceae is the largest family which is consisting of 13 species under the five genera. Among the seven localities surveyed in the district, Gundumala and Penukonda hills exhibited maximum diversity of lichens represented by 34 and 26 species. Pyxine petricola Nyl. is widely distributed and recorded from 6 localities of the district. This species can be used for pollution monitoring studies ...

Cryptogam Biodiversity and Assessment , 2017

Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reser... more Present study analyses the phytochemicals in some selected lichens of Seshachalam Biosphere Reserve, Andhra Pradesh. The lichen species are identified as Heterodermia diademata (Taylor) D.D. Awasthi, Parmotrema andinum (Müll. Arg.) Hale, P. grayanum (Hue) Hale, P. nilgherrense (Nyl.) Hale, P. praesorediosum (Nyl.) Hale, P. reticulatum (Taylor) M. Choisy, P. tinctorum (Despr. ex Nyl.) Hale, Parmelinella wallichiana (Taylor) Elix & Hale, Ramalina conduplicans Vain. and Usnea baileyi (Stirt.) Zahlbr. A total of 30 crude extracts in three different solvents such as 2-Propanol, Methanol and Water were prepared. The preliminary phytochemical screening revealed the occurrence of tannins, saponins, glycosides, proteins and triterpenoides in all the species while alkaloids, flavonoids, carbohydrates and steroids were found in some of the species. Aqueous extracts of all the species did not contain alkaloids, flavonoids, carbohydrates and steroids. Out of 10 species glycosides was present in 8 species, followed by presence of tannins, alkaloids and triterpenoides in 6 species. Flavonoids and proteins were found in 5 species and saponins and carbohydrates were found in 3 species only. Steroides were reported in P. reticulatum and P. andinum. Alkaloids, carbohydrates, flavonoids, glycosides, proteins, steroids, tannins and triterpenoides were reported in 2-propanol and methanolic extracts. Saponins were completely lacking in 2-propanol extracts of all the species. This is the first report with detailed phytochemicals analysis of lichens from Eastern Ghats of India.

Journal of Threatened Taxa, 2014