Results 31 to 40 of about 32,414 (257)

Genotypic variation for some important starch quality traits in sweetpotatos

open access: yes浙江大学学报. 农业与生命科学版, 2000
Sweetpotato genotypic variation for five important starch quality components, including starch content, amy-lose content, amylase activity, darking, and polyphenol oxidase activity were studied.
LU Guoquan
doaj   +1 more source

Bananas decrease acetaminophen potency in in vitro assays. [PDF]

open access: yesPLoS ONE, 2018
Edible portions of bananas contain high levels of polyphenol oxidase, which catalyzes reactions in the melanin formation pathway. Tyrosine, a physiological substrate of polyphenol oxidase, has an analogous structure to acetaminophen.
Yoshihiro Uesawa, Naotaka Tsuji
doaj   +1 more source

Effect of Polyphenol Oxidase on Deodorization

open access: yesBioscience, Biotechnology, and Biochemistry, 1997
A mixture of purified polyphenol oxidases (PPO), or acetone powders prepared from fruits and vegetables, and polyphenolic compounds (PPs) totally eliminated a methylmercaptan odor. 2-Methyl-thiochlorogenic acid was isolated from the reaction mixture of methylmercaptan and chlorogenic acid with burdock acetone powder.
NEGISHI, Osamu, OZAWA, Tetsuo
openaire   +2 more sources

Direct Electron Transfer of Polyphenol Oxidase on Carbon Nanotube Surfaces: Application in Biosensing

open access: yesInternational Journal of Electrochemical Science, 2009
In this work, the adsorption of polyphenol oxidase (PPO) on single-walled carbon nanotubes (SWCNTs) and its electrocatalytic behavior were investigated. To construct the biosensor, polyphenol oxidase was immobilized on the SWCNTs/GC electrode.
Ali Mohammadi   +3 more
doaj   +1 more source

CHEMOTHERAPEUTIC AND BIOCHEMICAL ACTIVITIES OF SOME FUNGICIDES AGAINST SQUASH DOWNY MILDEW DISEASE [PDF]

open access: yesJournal of Plant Protection and Pathology, 2002
The potency of five selected fungicides as chemotherapeutic agents against squash downy mildew was studied as well as their effect on biochemical changes of the host plant as chlorophyll, p-carotene and sugar contents, in addition to polyphenol ...
EI-S.A.M Abdallah, M. EI-Sherief
doaj   +1 more source

Chemical and Enzymatic Characterization of Leaves from Spanish Table Olive Cultivars

open access: yesFoods, 2022
Olive leaves are generated as by-products in the olive industry and contain substances with biological properties that provide health benefits. Although these compounds have been characterized in many leaves from olive cultivars devoted to olive oil ...
Eva María Ramírez   +3 more
doaj   +1 more source

Activation of Polyphenol Oxidase of Chloroplasts [PDF]

open access: yesPlant Physiology, 1973
Polyphenol oxidase of leaves is located mainly in chloroplasts isolated by differential or sucrose density gradient centrifugation. This activity is part of the lamellar structure that is not lost on repeated washing of the plastids. The oxidase activity was stable during prolonged storage of the particles at 4 C or -18 C.
openaire   +2 more sources

Effect of Green Food Processing Technology on the Enzyme Activity in Spelt Flour

open access: yesFoods, 2022
In this research, a new approach to enzyme inactivation in flour was presented by supercritical technology, considered a sustainable technology with lower energy consumption compared to other technologies that use ultra-high temperature processing. Total
Maja Leitgeb   +2 more
doaj   +1 more source

Preparative studies on the isolation of an enzyme associated with carthamin synthesis in Carthamus tinetorius L.

open access: yesActa Societatis Botanicorum Poloniae, 2014
Preliminary operations for the isolation of an enzyme associated with cathamin synthesis (carthamin-synthesizing enzyme) were done with a soluble extract of safflower seedlings.
Takao Homma   +4 more
doaj   +1 more source

Ảnh hưởng của tiền xử lý đến màu sắc và hiệu quả vô hoạt enzyme polyphenol oxidase trong xơ của quả mít Thái giống Changai (Artocarpus heterophyllus L.) ở Cần Thơ

open access: yesTạp chí Khoa học Đại học Cần Thơ
Nghiên cứu được thực hiện nhằm khảo sát ảnh hưởng của quá trình tiền xử lý nhiệt và sử dụng ascorbic acid đến màu sắc và hoạt tính enzyme polyphenol oxidase trong xơ của quả mít Thái giống Changai ở Cần Thơ.
Nguyễn Nguyễn Công Kha   +2 more
doaj   +1 more source

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