منابع مشابه
detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Autodigestion in crude extracts of soybean leaves and isolated chloroplasts as a measure of proteolytic activity.
Two methods of measuring protein breakdown resulting from self-digestion during incubation in extracts of soybean leaves were examined. The release of free alpha-amino-nitrogen was measured with ninhydrin, and the disappearance of the large subunit of ribulose bisphosphate carboxylase (RuBPcase) was followed with sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Rates of protein breakd...
متن کاملProteolytic activity in anther extracts of fertile and cytoplasmic male sterile petunia.
Proteolytic activity is compared in anther extracts from Petunia parodii fertile and cytoplasmic male sterile lines. It is characterized relative to developmental stage of the anthers, effect of variable incubation times, pH of isolation buffers, and degradation of marker proteins. In fertile anthers, proteolytic activity increases at the end of microsporogenesis and peaks early in microgametog...
متن کاملArginine vasopressin in extracts of bovine pituitary.
Gitelman et al. (1) suggest the natural occurrence in the bovine posterior pituitary of two different N-terminal "hormonogen" forms of arginine vasopressin. Since both hormonogens were found to be natriuretic, there is an implication that they may be related to "natriuretic hormone." This stimulates not so much comment as questions, since were this concept shown to be valid much of what we thou...
متن کاملProteolytic Activity Present in House-Dust-Mite Extracts Degrades ENA-78/CXCL5 and Reduces Neutrophil Migration
Background. Bronchial smooth muscle cells (BSMC) are a major source of proinflammatory and proangiogenic cytokines and chemokines, including VEGF and CXC-chemokines. CXC-chemokines act primarily on neutrophils, mediating their recruitment to and activation at the site of inflammation. In humans, house-dust mite (HDM) allergens can cause asthmatic exacerbations and trigger an inflammatory respon...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1951
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)55970-6