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Papers by yanetri asi nion

Most of P in agricultural soils is in unavailable forms for plant growth. Phosphate solubilizing ... more Most of P in agricultural soils is in unavailable forms for plant growth. Phosphate solubilizing bacteria can increase soil P availability. This study was aimed to isolate phosphate solubilizing bacteria from sugarcane waste compost and to test ability of the isolated bacterial to dissolve phosphate. The bacteria were isolated from three types of sugarcane waste, i.e. filter cake compost, bagasse compost, and a mixture of filter cake + bagasse + trash biomass compost. The potential colony was further purified by the Pikovskaya method on selective media. Eight isolates of phosphate solubilizing bacteria were obtained from all wasted studied. Amongst them, T-K5 and T-K6 isolates were superior in dissolving P from Ca 3 (PO 4) 2 in the media studied. The two isolates were able to solubilize P with solubilizing index of 1.75 and 1.67 for T-K5 and T-K6, respectively. Quantitatively, T-K6 isolate showed the highest P solubilization (0.74 mg / L), followed by T-K5 isolate (0.56 mg / L), while the lowest P solubilization (0.41 mg / L) was observed for T-K4 isolate. The increase of soluble P was not always followed by the decrease in pH.

IOP Conference Series: Earth and Environmental Science, 2021

North Sumatra Province is one of the major citrus producers for Siam cultivars in Indonesia. Rece... more North Sumatra Province is one of the major citrus producers for Siam cultivars in Indonesia. Recently, it experienced a significant decline in citrus production. One of the causes is the presence of huanglongbing (HLB) disease which results in decreased production and plant mortality. The research aim to obtain information on the origin of citrus seeds and to map HLB incidence in eight subdistricts within Karo District. This research was carried out through direct questionnaires to farmers, visual symptoms scoring, and molecular detection with Polymerase Chain Reaction (PCR). At least two villages were taken from each sub-district and three orchards were taken from each village as samples in January 2019. The results showed that in general, citrus plants aged 3 to 15 years. Mostly, citrus planted in Karo originated from uncertified seedlings bought from local and outside seed breeders in the province of North Sumatra. The highest symptoms severity of HLB diseases based on leaf score...

PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat

Since 2021, the government has been developing a food estate program at the Desa Batuah, clearing... more Since 2021, the government has been developing a food estate program at the Desa Batuah, clearing many hectares of rice fields. The problems faced by the community are frequent flooding in the planting area, low pH, and attack of the plant by pests, disease, and weeds that reduce agricultural production. The purpose of community service in this activity is the Batuah Village community and Real Work Lecture-Nationality students who at that time served in Batuah Village were able to explain land empowerment and village agricultural potential and were skilled in carrying out land empowerment, overcoming the problem of nuisance organisms plants and recognize the agricultural potential in the village and then maximize its potential. Empowerment of agricultural land in Batuah Village needs to pay attention to the keys to successful management of tidal swamp land for sustainable agriculture, such as Water Management, Land arrangement, Adaptive and prospective commodity selection, and appli...

Advances in Biological Sciences Research, 2022

Kelakai is an endemic fern found abundantly in Central Kalimantan. Regardless of its high availab... more Kelakai is an endemic fern found abundantly in Central Kalimantan. Regardless of its high availability, low economical value, and potential health benefits (natural source of iron, folic acid, antioxidant, antidiabetic, etc.), the utilization of the plant as a food ingredient is still limited. Black tea and coffee are very popular in Indonesia. Replacing sugar with artificial sweeteners is an alternative choice for reducing sugar consumption in sugar-sweetened beverages. The aims of this study were to study the effect of kelakai and milk addition in black tea and coffee beverages based on sensory characteristics, and to develop a formulation of kelakai beverages with high consumer acceptance. The sensory observation showed that coffee was better in masking putrid aroma and milk helped to reduce bitterness, astringency, and distinct aroma from the plant. Milk coffee was chosen to be optimized with further adjustment in sweetness (0.02%) and thickness (0.15%) levels. A maximum kelakai concentration that was still acceptable was evaluated using hedonic and forced ranking tests (n=53). The formulation with the highest consumer acceptance was milk coffee with ratios of kelakai : coffee : milk = 8:4:3 (v/v/v), sucralose 0.02% (w/v), sodium benzoate 0.04% (w/v), and CMC 0.15% (w/v). The sample was rated between slightly to moderately liked. It was ranked as the most preferred sample in the forced ranking test.

International Journal of Wildland Fire

International Journal of Technology, Jul 19, 2021

Tsuchi to biseibutsu, 2008

Tsuchi to biseibutsu, 2013

Proceedings of the 5th International Conference on Food, Agriculture and Natural Resources (FANRes 2019), 2020

The objective was to test S. palustris which has high antioxidant activity for bioactivities that... more The objective was to test S. palustris which has high antioxidant activity for bioactivities that may alleviate obesity: lipase inhibitory activity and lipid accumulated in 3T3-L1 adipocytes. Water, 50% methanol and methanol extracts of S. palustris were tested for lipase inhibitory activity and lipid accumulation inhibition in 3T3-L1 adipocytes. For lipase inhibitory activity, the extracts and fractions with highest activity were separated and assayed again. Fractionation through column chromatography was done on the water extract to separate it into water, 50% methanol and methanol fractions. The 50% methanol and methanol fractions from the first column were fractionated again with a different column into water, 20%, 40%, 60%, 80% and methanol fractions. The result was the water extract showed the highest lipase inhibition while the methanol extract showed the highest lipid accumulation inhibition in adipocytes. In conclusion, S. palustris extracts with its lipase inhibitory activity as well as lipid accumulation in adipocytes suppression activity is promising for future research aimed at obesity management.

The research objective was to determine the properties of physical and mechanics of mouse purun c... more The research objective was to determine the properties of physical and mechanics of mouse purun cement board on various hardeners. The cement board was processed with a size of 30 cm x 30 cm x 2 cm, a ratio of 3: 1, a density of 2 g / cm2, purified water content of 15%, hardener Ca(OH)2, CaCl2, MgCl2 with a concentration of 2%. Before making the cement board the hydration temperature test is carried out, then the resulting board is tested for the physical properties of the mechanics. And the grave test for 3 months. Data averaged and SD then tabulated and written in graphical form. The results of the study were hydration temperature: 31.38-33.50oC, inhibiting factors: 6.94-10.19%, board water content: 13.55% - 15.77%; density: 1.07-1.16 g / cm2; MoR: 22.96 - 30.31 kg / cm2, Compressive strength: 0.84 - 3.34%. Conclusion: Mouse purun can be processed into cement board. The good nature of the cement board is to treat CaCl2 2% hardener.

Eurasian journal of forest research, 2017

Young leaves of two wild ferns (Diplazium esculentum and Stenochlaena palutris) are uniquely eate... more Young leaves of two wild ferns (Diplazium esculentum and Stenochlaena palutris) are uniquely eaten among local peoples in Kalimantan Island. These edible ferns are regarded as important sources of Fe and other trace elements essential for human body. In order to investigate the effect of soil environments on the metal content, we analyzed eight elements (Al, Fe, Cr, Cu, Mn, Zn, Cs, and Pb) in the edible ferns collected from five different sites (riverside of Kahayan River near Bukit Rawi, farming area in Tangkiling, natural forest near Kasongan, and two peat soils at campus of The University of Palangkaraya and residential area in Palangkaraya city) in Central Kalimantan with distinguishable soil conditions. At the five sampling locations, we also collected an aluminum accumulator bush tree (Melastoma malabathricum) as a reference plant. The underground parts of S. palutris and D. esculentum accumulated higher concentration of Al and Fe than their leaf parts, whereas M. malabathricu...

Journal of Degraded and Mining Lands Management, 2016

There are about 23% waste oil palm empty fruit bunches (OPEFB) of total waste generated from the ... more There are about 23% waste oil palm empty fruit bunches (OPEFB) of total waste generated from the production of crude palm oil in oil palm plantations. Pyrolysis technology can be used to convert waste into biochar and further can be utilized for the improvement of soil. Biochar-microbes of OPEFB are biochar from OPEFB biomass that enriched with soil microbes. Biochar-microbes is expected to be used for the improvement of the soil and plants. Therefore the purpose of this research was to study the ability of biochar-microbes OPEFB to increase availability of the nutrients in sandy soils. The process of making biochar done by using slow pyrolysis technology by heating 300 o C and 400 o C for 2 and 3 hours, and with sizes 40 and 80 mesh, as well as indigenous microbial Bulkhorderia nodosa G.52.Rif1 and Trichoderma sp.) added. The biochar production and research were conducted in the Department of Forestry Laboratory and in the Department of Agronomy Laboratory, Faculty of Agriculture, ...

Jurnal Biodjati, 2017

Pemanfaatan anggrek spesies dari Kalimantan Tengah yang berpotensi sebagai bahan obat herbal berb... more Pemanfaatan anggrek spesies dari Kalimantan Tengah yang berpotensi sebagai bahan obat herbal berbasis kearifan lokal perlu dikaji. Penelitian dilakukan mulai bulan Oktober hingga Desember 2016. Tempat penelitian: koleksi anggrek spesies Kalimantan Tengah di Jl.Temanggung Tilung XIII Palangka Raya. Pemanfaatan anggrek spesies berdasar kearifan lokal berasal dari hasil wawancara pemilik kebun yang didukung dengan data hasil studi literatur. Spesies anggrek dari Kalimantan Tengah yang bermanfaat sebagai bahan obat herbal adalah batang dan daun anggrek tewu tadung/anggrek tebu (Grammatophylum speciosum) sebagai bahan obat kista dan uwei menyame (Bromheadia finlaysoniana (Lind.) Miq.) sebagai salah satu komponen obat sakit pinggang. Beberapa anggrek spesies yang berpotensi sebagai bahan obat herbal dan fitoterapi berdasar studi literatur antara lain: rhizome anggrek bambu (Arundina graminifolia (D. Don) Hochr) mengandung senyawa Arundinan mempunyai aktivitas anti bakteri. Daun Phalaenopsis manii mengandung phalaenopsine. Seluruh bagian tumbuhan Eria bambusifolia Lindl. Kimar digunakan untuk mengatasi keasaman lambung yang berlebihan dan gangguan sakit perut. Anggrek Coelogyne cristata mengandung Coeloginanthrin, Coeloginanthridin, dan Combretastatin C-1. Daun Dendrobium crumenatum Sw. (anggrek merpati) dapat digunakan untuk tapal pada bisul dan jerawat.

EnviroScienteae, 2018

Dayak tribe in Central Kalimantan Province has long time ago applied the local wisdom of healthy... more Dayak tribe in Central Kalimantan Province has long time ago applied the local wisdom of healthy life and environmental friendly by consuming more local vegetables that grow wild. The research was conducted from July to September 2018, by conducting survey observations and interviewing respondents in Kapuas district, Pulang Pisau district, Katingan district, Gunung Mas district, and Palangka Raya city. There are a total of 14 species found from swamp areas, namely Singkah enyuh (Cocos nucifera), Singkah undus (Elaeis guineensis), Singkah hambie (Metroxylon sagu), singkah uwei (Calamus sp), Taya (Nauclea sp), Ujau (Bambusa sp), Bajei (Diplazium esculentum), Bakung (Crinum asiaticum), Kalakai (Stenochlaena palustris), Kujang (Colocasia esculenta), Uru mahamen (Neptunia olearecea), Pucuk teratai (Nymphae sp), Genjer (Limnocharis flava), dan Kangkung danum (Ipomoea aquatica). The benefits of local vegetables aside from being a food source that has the potential as a drug, pesticides, b...