Classification of propionic acid bacteria and approaches to applied genetics

the innovation of a statistical model to estimate dependable rainfall (dr) and develop it for determination and classification of drought and wet years of iran

آب حاصل از بارش منبع تأمین نیازهای بی شمار جانداران به ویژه انسان است و هرگونه کاهش در کم و کیف آن مستقیماً حیات موجودات زنده را تحت تأثیر منفی قرار می دهد. نوسان سال به سال بارش از ویژگی های اساسی و بسیار مهم بارش های سالانه ایران محسوب می شود که آثار زیان بار آن در تمام عرصه های اقتصادی، اجتماعی و حتی سیاسی- امنیتی به نحوی منعکس می شود. چون میزان آب ناشی از بارش یکی از مولفه های اصلی برنامه ...

Genetics of proteinases of lactic acid bacteria.

Because it is essential for good growth with concomitant rapid acid production, and for the production of flavorous peptides and amino acids, the proteolytic ability of lactic acid bacteria is of crucial importance for reliable dairy product quality. In view of this importance, considerable research has been carried out to characterize the enzymes involved. The intensified genetic research in t...

Bioassay-Guided Isolation and Characterisation of Antifungal Metabolites Studies of Lactic Acid Bacteria and Propionic Acid Bacteria

Adaptation of the Propionic-Acid Bacteria to Vitamin B(1) Synthesis Including a Method of Assay.

In a paper dealing with the nutrition of the propionic-acid bacteria Wood, Andersen, and Werkman (1938) report that one species Propionibacterium pentosaceum (49W), can be "trained" to grow as well in the absence of vitamin B1 as in its presence. Their data show that adaptation occurred after continuous serial transfer in an ammonium sulfate medium containing only ether extract of yeast extract...

The Aerobic Dissimilation of Lactic Acid by the Propionic Acid Bacteria.

The hydrogen reacts with lactic acid to form propionic acid. Pyruvic acid has been isolated from the fermentation of glucose (1934) and of lactic acid (unpublished data) by Wood and Werkman. These investigators supported Van Niel's proposed dissimilation of pyruvic acid inasmuch as the occurrence of acetaldehyde could not be demonstrated. Little information is available concerning the aerobic d...