The pectic enzymes of Aspergillus niger. A mercury-activated exopolygalacturonase
نویسندگان
چکیده
منابع مشابه
Production of Proteolytic Enzymes by a Keratin-Degrading Aspergillus niger
A fungal isolate with capability to grow in keratinous substrate as only source of carbon and nitrogen was identified as Aspergillus niger using the sequencing of the ITS region of the rDNA. This strain produced a slightly acid keratinase and an acid protease during cultivation in feather meal. The peak of keratinolytic activity occurred in 48 h and the maximum proteolytic activity in 96 h. The...
متن کاملPectic Enzymes
Indoleacetic acid (IAA) and/or inhibitors of DNA, RNA or protein synthesis were added to the apex of decapitated seedlings of Pisum sativum L. var. Alaska. At various times up to 4 days, enzymic protein was extraoted from a segment of epicotyl immediately below the apex and assayed for its ability to hydrolyse polysaccharides or their derivatives. With the exception of am;ylase, the total amoun...
متن کاملDegradation of pectic polysaccharides in various fruits by pectinase derived from Aspergillus niger
Aspergillus spp. are widely spread plant pathogens. In several kinds of fruit, especially in apple and peach, aspergillus rot is one of the postharvest desease in fruit, but the infection mechanism is not known. The degradation of cell walls by pathogens is significant in primary infection and afterinfection, and plays an important role in the advancement of mycelium into the host plant and the...
متن کاملGlycosidases of Aspergillus niger
A highly purified preparation of 1,2-oc-L-fucosidase, free of /3-galactosidase and P-N-acetylglucosaminidase activities, has been obtained from a commercial preparation of Aspergillus niger by a simple isolation procedure involving ammonium sulfate precipitation, pressure dialysis, repeated gel Cltration on Sephadex G-150, and chromatography on diethylaminoethyl Sephadex A-50. The enzyme has a ...
متن کاملPectic zymogram variation and morphological identification of Aspergillus species
One hundred and three Aspergillus isolates belonging to 12 species including: A. alliaceus, A. candidus, A. carneus, A. flavus, A. fumigatus, A. niger var. niger, A. niger var. awamori, A. niveus, A. ochraceous, A. sydowii, A. terreus, A. ustus,and A. versicolor based on morphological characters were obtained from various sources.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1966
ISSN: 0006-2936
DOI: 10.1042/bj0990557