V
Varda Kahn
Researcher at Agricultural Research Organization, Volcani Center
Publications - 54
Citations - 1565
Varda Kahn is an academic researcher from Agricultural Research Organization, Volcani Center. The author has contributed to research in topics: Tyrosinase & Browning. The author has an hindex of 20, co-authored 54 publications receiving 1516 citations.
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Journal ArticleDOI
Inhibition of mushroom tyrosinase by tropolone
Varda Kahn,Andrawis Andrawis +1 more
TL;DR: Comparison between the effectiveness of various copper chelators showed that Tropolone is one of the most potent inhibitors of mushroom tyrosinase; 50% inhibition was observed with 0.4 × 10−6 M tropolone.
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Effect of Proteins, Protein Hydrolyzates and Amino Acids on o‐Dihydroxyphenolase Activity of Polyphenol Oxidase of Mushroom, Avocado, and Banana
TL;DR: Tiglycine, diglytine and glycine, in decreasing order, were effective in lowering the final level of colored melanin formed by the action of polyphenol oxidase on DL-DOPA.
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Polyphenol oxidase activity and browning of three avocado varieties
TL;DR: A comparison between the in vitro total and specific activity of polyphenol oxidase of three avocado varieties, Fuerte, Horeshim and Lerman, showed clear differences that were correlated with the in vivo rate of browning of the corresponding freshly cut mature fruit.
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Effect of Kojic Acid on the Oxidation of DL‐DOPA, Norepinephrine, and Dopamine by Mushroom Tyrosinase
TL;DR: Kojic acid inhibits effectively the rate of formation of pigmented product(s) and of oxygen uptake when DL-DOPA, norepinephrine and dopamine are oxidized by mushroom tyrosinase.
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Some biochemical properties of polyphenoloxidase from two avocado varieties differing in their browning rates
TL;DR: The biochemical properties of polyphenoloxidase (PPO) from Lerman and Fuerte avocado varieties, which differ in their rates of browning, were studied.