prosper marciano | Tel Aviv University (original) (raw)
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Papers by prosper marciano
Postharvest Biology and Technology, 2016
The goal of this study was to examine the effects of regular air (RA) and controlled atmosphere (... more The goal of this study was to examine the effects of regular air (RA) and controlled atmosphere (CA: 2 kPa O 2 + 5 kPa CO 2) at 7 C, on the quality of husks and aril juice of three pomegranate cultivars (PG100-1, EVE, PG116-17), during 5 months' cold storage. Although the three cultivars differed in their keeping quality in RA, they were similar in their response to CA, with regard to reduction of husk scald and decay. Differences were found in several of the juice parameters examined during storage, implying that each cultivar may require a specific storage protocol to maintain their taste and nutritional quality. However, some similarities were detected: the levels of punicalagin, the major phenolic of the husk decreased as did the contents of glucose, fructose and malic acid in the juice. These changes imply a possible alteration in the aril taste during storage. Basically, CA was a better storage regime than RA, with regard to apparent fruit quality. However, RA was the better condition for maintaining the anthocyanin level in the arils and in preventing the occurrence of off-flavors. 2015 Elsevier B.V. All rights reserved.
Journal of Agricultural and Food Chemistry, 2012
Aqueous extracts of pomegranate peels were assayed in vitro for their antifungal activity against... more Aqueous extracts of pomegranate peels were assayed in vitro for their antifungal activity against six rot fungi that cause fruit and vegetable decay during storage. The growth rates of Alternaria alternata, Stemphylium botryosum, and Fusarium spp. were significantly inhibited by the extracts. The growth rates were negatively correlated with the levels of total polyphenolic compounds in the extract and particularly with punicalagins, the major ellagitannins in pomegranate peels. Ellagitannins were also found to be the main compounds in the bioactive fractions using bioautograms, and punicalagins were identified as the main bioactive compounds using chromatographic separation. These results suggest that ellagitannins, and more specifically punicalagins, which are the dominant compounds in pomegranate peels, may be used as a control agent of storage diseases and to reduce the use of synthetic fungicides.
Postharvest Biology and Technology, 2016
The goal of this study was to examine the effects of regular air (RA) and controlled atmosphere (... more The goal of this study was to examine the effects of regular air (RA) and controlled atmosphere (CA: 2 kPa O 2 + 5 kPa CO 2) at 7 C, on the quality of husks and aril juice of three pomegranate cultivars (PG100-1, EVE, PG116-17), during 5 months' cold storage. Although the three cultivars differed in their keeping quality in RA, they were similar in their response to CA, with regard to reduction of husk scald and decay. Differences were found in several of the juice parameters examined during storage, implying that each cultivar may require a specific storage protocol to maintain their taste and nutritional quality. However, some similarities were detected: the levels of punicalagin, the major phenolic of the husk decreased as did the contents of glucose, fructose and malic acid in the juice. These changes imply a possible alteration in the aril taste during storage. Basically, CA was a better storage regime than RA, with regard to apparent fruit quality. However, RA was the better condition for maintaining the anthocyanin level in the arils and in preventing the occurrence of off-flavors. 2015 Elsevier B.V. All rights reserved.
Journal of Agricultural and Food Chemistry, 2012
Aqueous extracts of pomegranate peels were assayed in vitro for their antifungal activity against... more Aqueous extracts of pomegranate peels were assayed in vitro for their antifungal activity against six rot fungi that cause fruit and vegetable decay during storage. The growth rates of Alternaria alternata, Stemphylium botryosum, and Fusarium spp. were significantly inhibited by the extracts. The growth rates were negatively correlated with the levels of total polyphenolic compounds in the extract and particularly with punicalagins, the major ellagitannins in pomegranate peels. Ellagitannins were also found to be the main compounds in the bioactive fractions using bioautograms, and punicalagins were identified as the main bioactive compounds using chromatographic separation. These results suggest that ellagitannins, and more specifically punicalagins, which are the dominant compounds in pomegranate peels, may be used as a control agent of storage diseases and to reduce the use of synthetic fungicides.