V. THE HYDRATION OF GUM ARABIC AND GLYCOGEN BY HENRY BOWEN OAKLEY From the Sir
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Glycogen, hyaluronate, and some other polysaccharides greatly enhance the formation of exolipase by Serratia marcescens.
Among 21 different polysaccharides tested, 5 greatly enhanced the spontaneous and cyclic AMP-induced formation of exolipase: glycogen, hyaluronate, laminarin, pectin B, and gum arabic. These polysaccharides have in common the tendency to form highly ordered networks because of the branching or helical arrangement, or both, of their molecules. None of the polysaccharides could be utilized by the...
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The inactivation of bacteriophage by substances f rom susceptible bacteria has been studied by Burne t (1) and Freeman (2). I t s inact ivat ion by antisera has been studied by Andrewes and Elford (3) and Bumet , Keogh, and Lush (4). Recent ly Ashenburg et al. (5) reported tha t saline solutions of gum arabic, starch, or glycogen inact ivated an anti-KlebsieUa pneumon/ae phage. We have studied ...
متن کاملThe inhibition of bacteriophagy by bacterial and nonbacterial polysaccharides.
Studies of susceptibility to bacteriophage have shown that polysaccharides associated with somatic bacterial antigens may inhibit the lytic action of bacteriophages upon susceptible homologous organisms. Levine and Frisch (1933 a,b) demonstrated this inhibitory effect with extracts from certain Salmonella and Shigella cultures. Burnet (1934) confirmed these findings; and Gough and Burnet (1934)...
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The natural and semisynthetic carbohydrates scleroglucan, locust bean gum, tamarind gum (glyloid) and its three sulphate derivatives (GP4311, GP4327 and GP4324), glycogen and its two sulphate derivatives (GP4427 and GP4435), alginic acid and dextran sulphate, were investigated for their inhibitory effect on rubella virus (RV) infection of Vero cells. The neutral polymer scleroglucan and two hig...
متن کاملAdministration of Caffeine in Alternate Forms
There has been recent interest in the ergogenic effects of caffeine delivered in low doses (~ 200 mg or ~ 3 mg/kg body mass) and administered in forms other than capsules, coffee and sports drinks, including chewing gum, bars, gels, mouth rinses, energy drinks and aerosols. Caffeinated chewing gum is absorbed quicker through the buccal mucosa compared with capsule delivery and absorption in the...
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تاریخ انتشار 2005