نتایج جستجو برای: the activity of polyphenol oxidase
تعداد نتایج: 22852810 فیلتر نتایج به سال:
background & aim: glycyrrhiza l. (fabaceae) consists of perennial herbs grow in sandy soils with hard lightness. three species of the genus grow in iran, among them g. glabra l. has the widest distribution. it is well known in english as licorice and the root extract includes flavonoids and glycyrrhizin are used widely in medicine, food industry, tobacco products and other industries. liqui...
Nitrogen has an important role for supplying carbon skeletons which needs for producing compatible solutes and stress tolerance enzymes. Water deficit affects nitrogen fixation in legums. So we studied the effect of various nitrogen sources on physiological, and biochemical features of bean under water stress. This experiment was conducted as factorial based on completely randomized design with...
In this research, the effects of electromagnetic fields of various strengths (0, 1 and 2mT) have been investigated on antioxidant enzymes activity in Valerian (Valeriana officinalis L.). The dry and wet (soaked for 30 min) Valerian seeds were exposed to electromagnetic fields 30 min per day for 3 days. Each treatment and control groups had 3 replicates and 10 seeds were employed for each replic...
Effect of salinity stress on some morphophysiological and biochemical traits of two barley cultivars
Considering the increasing trend of salinity development and the lack of suitable arable lands for agriculture in the world, the use of saline resistant species that reduce the effects of salinity stress in plants is very important. The aim of the present study was, investigation and comparison of morphophysiological and biochemical traits in leaf tissue of two barley cultivars (Aklyl and Zahak...
Polyphenol oxidase(PPO) (E.C. number 1.10.3.1) has ubiquitous distribution in almost all living organism. Whereas, peroxidase(POD) (E.C. number 1.11.1) act as hormone regulation and defense mechanism in plants. Keeping in pace with their present-day industrial application, efforts have been made to evaluate the activity of these two enzymes (PPO and POD) using pepper pericarp (Capsicum annuum L...
This research investigated the role of oxidative enzymes in the defense response of sorghum, Sorghum bicolor (L.) Moench (Poales: Poaceae), to the sorghum shoot fly, Atherigona soccata Rondani (Diptera: Muscidae). Changes in polyphenol oxidase and peroxidase activity and total protein content were observed in resistant and susceptible sorghum genotypes in response to A. soccata feeding. Resista...
in this study the effect of different concentrations of silicon( 0, 2 , 4 and 6 mm, on expression of some genes involved in resistance and activity of several antioxidan enzymes was investigated: the plants was treated in flowering stage via soil solution. the treated plants were inoculated with 106 spore suspended in 1 ml by injection into the lower part of the spikelets and then were harveste...
background: mushroom tyrosinase a potent candidate in clinical studies known as polyphenol oxidase, is a metaloenzyme from the oxidase superfamily widely distributed from lower to higher life forms. it plays a crucial role in sclerotization of exoskeleton in insects, also responsible for skin pigmentation in mammalians. objective: in this study, after reconstitution of mt by some metal ions, th...
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