The determination of base sequences of several transfer ribonucleic acids has led to proposals for their secondary structure. The most popular structural model has had the form of a cloverleaf.' There have also been some indications of an additional fixation of the arms of the model in a tertiary structure. So far there is no direct experimental proof for any of these structures, although inves...

The in vitro affinity and adsorption capacity of a humic acid, oxihumate, for aflatoxin B1 (AFB1) was evaluated, utilizing Langmuir and Freundlich adsorption isotherms. Oxihumate showed a high in vitro affinity for AFB1. The Freundlich isotherm fitted the data better than the Langmuir isotherm, and binding capacities of 10.3, 7.4, and 11.9 mg of AFB1/g of oxihumate at pH 3, 5, and 7, respective...

highly hopped and dry beer production consumption has increased steadily for the last twenty years, following rise of craft breweries in United States America trend they set over world. This overuse hops offers some environmental, technological, economic challenges industry. Researchers have been studying several ways to make more ecofriendly by promoting reuse spent increasing extraction yield...

Previous physical studies from this laboratory by sedimentation velocity and ditfusion and by sedimentation equilibrium (YuE, R. H., RATLIFF, R. L., AND KWY, S. A. (1967) Biochemistry 6, 2923-2932) have permitted an assignment of the kinetic molecular weight of the crystalline brewers’ yeast nucleoside diphosphokinase, namely 102,000 ( 12,000) at infinite dilution. The observed concentration de...

Scott, Norris, and Heuser (1) and Daniel, Scott, Heuser, and Norris (2) reported that the unknown growth-promoting activity in several natural products for LactobaciUua casei was multiple in nature. The latter investigators proposed the existence of two unknown factors as an explanation for the wide variations in response to different antipernicious anemia liver extracts obtained with L. casei ...

This study aimed to investigate the effects of storage duration and temperature on the characteristics of wet brewers grains (WBG) as feeds for ruminant animals. Four storage temperatures (5°C, 15°C, 25°C, and 35°C) and four durations (0, 1, 2, and 3 d) were arranged in a 4×4 factorial design. Surface spoilage, chemical composition and microorganism density were analyzed. An in vitro gas test w...

While the existence and coenzymatic function of riboflavin-5-phosphate’ have been recognized for some time, the meansby which this substance is synthesized from the free vitamin have not been satisfactorily demonstrated. Verzar and coworkers (3,4) have reported extensive phosphorylation of riboflavin by means of inorganic phosphate in preparations of intestinal mucosa. The synthesis of FMN by s...