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Characterisation of polyphenol oxidase and peroxidase and the role in browning of loquat fruit
Eriobotrya japonica PPO POD
2015/3/30
Polyphenol oxidase (PPO) and peroxidase (POD) were extracted from a new loquat fruit cultivar (Ninghaibai) and characterised using reliable spectrophotometric methods. In both cases, the optimum pH fo...
Characterisation of polyphenol oxidase from Melissa officinalis L. subsp. officinalis (lemon balm)
lemon balm protein enzyme kinetics inhibition
2014/2/24
Polyphenol oxidase (PPO) from Melissa officinalis L. subsp. officinalis (lemon balm) was partially purified by ammonium sulphate precipitation and dialysis; and then it was characterised in detail in ...
Influence of Developmental Stage on Activities of Polyphenol Oxidase, Internal Characteristics and Colour of Lettuce cv. Grand Rapids
Developmental Stage Polyphenol Oxidase
2016/5/31
An analyzing study to evaluate the relationship between Polyphenol Oxidase (PPO) activity, internal qualities and degree of browning was conducted on lettuce var. Grand Rapids in order to understand t...
Rooting behaviour, polyphenol oxidase activity, and biochemical changes in grape rootstocks at different growth stages
Biochemical constituents grape rootstocks growth parameters
2011/6/29
Four grape rootstocks belonging to different Vitis species were planted in September. Rooting behaviour, polyphenol oxidase (PPO; EC 1.14.18.1) activity and biochemical parameters were studied at diff...
Total Polyphenol, Polyphenol Oxidase, Antioxidant Activity and Color Profiles of Some Wheat Varieties from Bangladesh
Wheat antioxidant activity total polyphenol polyphenol oxidase activity color index
2010/11/15
Nine wheat varieties (Shatabdi, Showrav, Protiva, Ahgrani, Kanchan, Akbar, Barkat, Sonalika,
Kheri) from Bangladesh were analyzed for determination of total polyphenol (TP), polyphenoloxidase (PPO), ...
Variation of Total Polyphenol and Polyphenol Oxidase Activity during Maturation of Mango Fruit (Mangifera indica L. ‘Irwin’) Cultured in a Plastic House
‘Irwin’ mango fruit maturation of mango variation of total polyphenol
2009/7/8
Variation of total polyphenol (TPP) and polyphenol oxidase activity (PPO) was investigated in ‘Irwin’ mango fruit in various color stages of development: green, purple, purplish red and red. Fruits us...
Effects of Polyphenol Oxidase Activity in Wheat Flour on Protein-Bound 5-S-Cysteinyldopa Formation in Gluten
5-S-cysteinyl-3 4-dihydroxyphenylalanine (5-S-cysteinyldopa) polyphenol oxidase
2009/7/8
The effects of polyphenol oxidase (PPO) activity in wheat flour on the formation of protein-bound 5-S-cysteinyl-3, 4-di-hydroxyphenylalanine (5-S-cysteinyldopa) in gluten have been studied. The wheat ...
Development of a Simple Method of Evaluating Polyphenol Oxidase Activity in Wheat Flour
Simple evaluation method Wheat Yellow alkaline noodle Discoloration Polyphenol oxidase activity
2009/7/7
The bright and yellow color of yellow alkaline noodles (YAN) is a desirable end-use quality. There is a high correlation between dough discoloration and polyphenol oxidase (PPO) activity in wheat see...
Comparison of Soluble and Plastidal Polyphenol Oxidase in Mature Apples
polyphenol oxidase plastid subcellular localization
2009/6/17
Polyphenol oxidase (PPO) is transported to plastid after translation. However, we often detect PPO activity in a soluble fraction of apple. Here we examined the location of PPO in retail apples. PPO a...
Purification and Characterization of Wheat（Triticum aestivum）Polyphenol Oxidase
wheat polyphenol oxidase purification
2009/6/10
Polyphenol oxidase was purified to homogeneity from Japanese wheat (Triticum aestivum cv. Tohoku 198) bran, using 4-methylcatechol as a substrate. The enzyme was purified 1670-fold with a recovery of ...
Banana Polyphenol Oxidase: Occurrence and Change of Polyphenol Oxidase Activity in Some Banana Cultivars during Fruit Development
polyphenol oxidase tyrosynase development period
2009/5/31
Occurrence of polyphenol oxidase (PPO, o-diphenol: oxygen oxidoreductase, EC.1.10.3.1) in the fruits of nine cultivars of banana (Musa spp.) commercially cultivated in China was investigated. All bana...
Purification and Characterization of Polyphenol Oxidase from Edible Yam（Dioscorea opposita Thunb.）
polyphenol oxidase edible yam dopamine oxidase
2009/5/31
Soluble polyphenol oxidase of edible yam (Dioscorea opposita Thunb.) was purified approximately 203-fold with a recovery rate of 15% by ammonium sulfate fractionation, ion exchange chromatography, hyd...
Characteristics of Polyphenol Oxidase in Hale Haven Paches
Polyphenol Oxidase Hale Haven Paches
2009/1/23
The characteristics of polyphenol oxidase (PPO) from "Hale Haven" peaches were investigated. "Aceton Powder" was first prepared from peaches at three different maturity stages, namely unripe, half-rip...
Some Characteristics of Polyphenol Oxidase and Peroxidase from Taro（Colocasia antiquorum）
Characteristics of Polyphenol Oxidase Peroxidase from Taro（Colocasia antiquorum）
2009/1/15
The heat inactivation kinetics of taro polyphenol oxidase (PPO) and peroxidase (POD) in the temperature range of 50°-80°C followed the first-order kinetic model. Both enzymes possessed two isoenzymes ...
Rhyzopus oryzae Endopolygalacturonase and Borago officinalis Polyphenol Oxidase Thermostability, Isothermal and Thermal Gradient Methods
Borago officinalis polyphenol oxidase endopolygalacturonase heat inactivation
2008/10/26
Heat stability of two major enzymes in vegetable processing, such as endopolygalacturonase from Rhyzopus oryzae and polyphenoloxidase from Borago officinalis, has been calculated. Isothermal and nonis...