The postharvest life of cut Eustoma grandiflorum flowers is limited in open flowers. Therefore a factorial experiment based on a completely randomized design with ascorbic acid (AsA) at 4 levels (0, 100, 200, 300mg L-1) and citric acid (CA) at 3 levels (0, 100, 200 mg L-1) with 3 replications and 3 samples for each replications, was conducted for this purpose. Results indicated that a significa...

oxaloacetate +pyruvate ci 8-acontate = ocitrat. In order to be able to examine the new hypothesis we have worked out methods for the micro-determination of ci8-aoonitic and i8ocitric acids, a preliminary account ofwhich has been published in the Proceedings of the Biochemical Society (Krebs & Eggleston, 1943 b). So far no specific micro-methods for the estimation of the two. acids have been des...

Objective: Polyphenol oxidase or PPO (EC 1.14.18.1) is considered the enzyme responsible for quality deterioration and browning in different fruits during postharvest period. The objective of this study was to evaluate the antibrowning (inhibition of polyphenol oxidase activity) effect of Cysteine, Ascorbic acid, citric acid, kojic acid and glycine at two different pH (6 and 7) in  hawthorn. Me...