Results 11 to 20 of about 58,939 (280)

MEKANISME INHIBISI ENZIM POLIFENOL OKSIDASE PADA SARI BUAH MARKISA DENGAN SISTEIN DAN ASAM ASKORBAT1

open access: yesJurnal Riset Kimia, 2015
The mechanism of polyphenol oxidase enzyme inhibition was studied by isolation of enzyme from the passion fruite juice (Passiflora Sp). The extracted enzyme polyphenol oxidase has an optimum activity at pH 5,6 and temperature of 300 C using a pirogalol ...
Elida Mardiah
doaj   +1 more source

Characterization of Polyphenol Oxidase from Eruca sativa

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023
Enzymatic browning reactions by polyphenol oxidases cause alteration of appearance, flavor and nutritive value of vegetables and fruits. It is one of the important problems for vegetables used as salads and causes lots of economic losses. In this study,
Sibel Kahraman, Negin Shabnam
doaj   +1 more source

Electrochemistry and application of a novel monosubstituted squarate electron-transfer mediator in a glucose oxidase-doped poly(phenol) sensor [PDF]

open access: yes, 2004
Electrosynthetic poly(phenol) nanofilms were deposited in situ on platinum electrodes in the presence and absence of glucose oxidase. The synthesis charges and currents of the nonconducting polymer films were recorded at various applied potentials for ...
Hall, Lincoln A.   +6 more
core   +1 more source

Response of Black (Morus nigra), White and White Shahtoot (Morus alba) Mulberry Fruits to Ascorbic Acid Treatment and Drying Methods

open access: yesمجلة ديالى للعلوم الزراعية, 2022
The drying process plays an important role in heat-sensitive product dehydration. This study was conducted to evaluate the response of three species of mulberry fruit (Morus nigra L. (Black mulberry), Morus alba L.
Dlkhwaz Ahmed Hama   +3 more
doaj   +1 more source

Obstruction of Water Uptake in cut Chrysanthemum Stems after Dry Storage: Role of Wound-induced Increase in Enzyme Activities and Air Emboli [PDF]

open access: yes, 2009
Hydraulic conductance of cut chrysanthemum stems was lowered by the aspiration of air as well as by a wound-induced plant response. By measuring the hydraulic conductance of stem segments in which air could be introduced into and/or removed from the ...
Arevalo-Galarza, L., Meeteren, U., van
core   +2 more sources

Ultraviolet Irradiation Effect on Apple Juice Bioactive Compounds during Shelf Storage

open access: yesFoods, 2016
Clarified and standardized apple juice was ultraviolet-irradiated to inactivate polyphenol oxidase enzyme and microbiota, and its effect on bioactive compounds and stability during storage was also evaluated.
Edmundo Juarez-Enriquez   +3 more
doaj   +1 more source

Effect of antioxidants and pH on browning and firmness of minimally processed eggplant

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2020
Minimal processing of eggplant (Solanum melongena L.) generates loss of firmness and polyphenol oxidase catalyzes the oxidation of phenolic compounds producing enzymatic browning. The aim of this study was to evaluate the effect of 1% ascorbic acid and 2%
Diana P. USCANGA-SOSA   +5 more
doaj   +1 more source

Influence of Cold Storage on Quality of Croatian Traditional Apple Cultivars [PDF]

open access: yesKemija u Industriji, 2023
The aim of this work was to investigate the influence of cold storage at 2 °C for 180 days on water content, total acids, reducing and total sugar, antioxidant activity, polyphenol oxidase activity, and polyphenol profile of three Croatian traditional ...
Ante Lončarić   +10 more
doaj   +1 more source

Extraction conditions of polyphenol oxidase from banana peel

open access: yesمجلة بغداد للعلوم, 2016
Polyphenol oxidase (PPO) is an enzyme containing copper, presents in various fruits and vegetables. It is responsible for the browning reactions when the cells are damaged during handling.
Baghdad Science Journal
doaj   +1 more source

Effects of Exogenous Salicylic Acid Application to Aboveground Part on the Defense Responses in Bt (Bacillus thuringiensis) and Non-Bt Corn (Zea mays L.) Seedlings

open access: yesPlants, 2022
Bt (Bacillus thuringiensis) corn is one of the top three large-scale commercialized anti-insect transgenic crops around the world. In the present study, we tested the Bt protein content, defense chemicals contents, and defense enzyme activities in both ...
Yuanjiao Feng   +5 more
doaj   +1 more source

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