Variation of the Polyphenol Oxidase Activity in Tea Leaves (Part 2)
نویسندگان
چکیده
منابع مشابه
Changes in Chemical Constituents and Polyphenol Oxidase Activity of Tea Leaves with Shoot Maturity and Cold Storage
The variation in the composition of fresh tea leaves with season and shoot maturity, and to the applicability of cold storage (4C and 90% relative humidity [RH]) for the purpose of withering of tea leaves were studied. The results showed that the levels of polyphenol oxidase (PPO) activity and the polyphenolic content changed significantly with plucking season and shoot maturity. No significant...
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15 صفحه اولPolyphenol oxidase activity expression in Ralstonia solanacearum.
Sequencing of the genome of Ralstonia solanacearum revealed several genes that putatively code for polyphenol oxidases (PPOs). To study the actual expression of these genes, we looked for and detected all kinds of PPO activities, including laccase, cresolase, and catechol oxidase activities, in cellular extracts of this microorganism. The conditions for the PPO assays were optimized for the phe...
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Polyphenol oxidase (PPO) activity varied in differentiation from hyphae to rhizomorph and croute in A. mellea. In undifferentiated hyphae there was not any PPO activity, while croute showed the highest activity. Electrophoresis in the presence of SDS allows the detection of intensive enzyme forms of PPO, and can also convert slower migrating enzyme forms to faster ones. Some fluorescent co...
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ژورنال
عنوان ژورنال: Chagyo Kenkyu Hokoku (Tea Research Journal)
سال: 1969
ISSN: 0366-6190
DOI: 10.5979/cha.1969.31_19