Results 21 to 30 of about 32,414 (257)

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

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

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

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

Role of Certain Elicitors on the Chemical Induction of Resistance in Tomato against the Leaf Caterpillar Spodoptera litura Fab.

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2008
Mill. The four presumptive defenses manipulated were protinase inhibitors, polyphenol oxidase, peroxidase and lipoxygenase. The elicitors used were jasmonic acid (JA), salicylic acid (SA) and PGPR Pseudomonas aeruginosa.
M. MELVIN JOE, N. MUTHUKUMARAN
doaj   +1 more source

EFFECT OF POLYAMINES PRETREATMENTS ON THE ACTIVITY OF ANTIOXIDANT ENZYMES IN SALT STRESSED WHEAT PLANTS [PDF]

open access: yesJournal of Plant Production, 2010
A pot experiment was conducted to study the effect of polyamines pretreatments, putrescine (2, 4, 6, 8 &10  mM) or spermine (  2,4, 6,8 & 10 mM),on the activity of  catalas, peroxidase, and polyphenol oxidase in salt stressed wheat plants.
Abeer Mohamed, Eglal G., Fawzia Ebad
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

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

Response of salt stressed barley seedlings to phenylurea

open access: yesPlant, Soil and Environment, 2003
The effect of phenylurea with reported cytokinin-like activities on seed germination, seedling growth, activities of antioxidant enzymes, polyphenol, peroxidase, indoleacetic acid oxidase, and total phenolic compounds, flavonoids was investigated in ...
R.M. Ali, H.M. Abbas
doaj   +1 more source

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