Oat glucan

The tentative identification of D-glucose in SI was reinforced by the cross-reaction in anti-Pn I of oat glucan, which contains jS-D-(l—>3)- and i8-d-(1—>4)-linked D-glucose units. 

Crown gall polysaccharide Mycoplasma glucan Oat glucan... 

A derivatized form of pneumococcal type III polysaccharide has been used to distinguish between three jS-D-glucan hydrolases (including cellulase) from a Streptomyces species. Oligosaccharides also released from carboxymethyl-cellulose, lichenin, and oat glucan by the enzymes were identified, allowing the substrate specificities of the enzymes to be deduced. 

Bacillus subtilis lichenase hydrolysed lichenin, oat glucan, and reduced pneumococcal type III polysaccharide. Unlike laminarinase, the enzyme did not degrade laminarin and carboxymethyl-laminarin. 

Maki K.C., Shinnick F., Seeley M.A., Veith P.E., Quinn L.C., Hallissey P.J., Temer A., Davidson M.H. Food products containing free tall oil-based phytosterols and oat glucan lower serum total and LDL... 

Somewhat analogous to these rice products is Oatrim, a material based on oat flour. It was developed at the Northern Laboratory of the USDA and is offered commercially by several firms. Oatrim contains 5% proteia, 5% P-glucan, 2% pentosans, and 83% maltodextrias. Unique properties are claimed based on the P-glucan component, and preparation of Oatrim is disclosed ia USDA pubHcations and patents. Briefly, oat flour is broken down by a-amylase, then the water-soluble component is dried and is the product of commerce, aimed at ground meat product usage. 

The scientific interest in cereal /1-glucans arose partly from the problems they cause in brewing and animal-feed industries in the case of barley [318] and partly from the health benefits, such as cholesterol reduction [319-321], regulation of postgrandial seriun glucose levels in humans and animals [319,322], and immunostimulatory activity [323,324]. Some of these activities have been observed with both oat and barley )6-glucans [325]. 

Fig. 16 Compression stress (a) - Hencky strain (sh) curves for gels of )0-glucan samples from oat oatlOO (2.12) and oat200 (2.13), barley bar 100 (2.80) and bar200 (3.04), wheat whe200 (3.66), and lichenan lie 100 (24.49) with cellotriosyl/cellotetraosyl ratios given in parenthesis. Polymer concentration, 8% w/v and gel curing temperature 25 °C...

Figure 1. Induction of xylanases in Trichoderma harzianum. The ratios of xylanase to endocellulase activities were determined in the culture filtrates of T. harzianum grown on steam treated aspenwood. Aspen chips were steam treated from 20 to 240 s at 240° C to produce a series of samples with a variable content of xylan and cellulose. The specific content of these carbohydrates were expressed as the ratio of xylan to glucan. Enzyme activities were determined on culture filtrates of 300 mL batch cultures of T. harzianum grown on these wood samples at a loading of 1% (w/v) as described by Saddler and Mes-Hartree (66). Enzyme activities were also determined in culture filtrates of T. harzianum grown on Avicel, Solka Floe and oat spelts xylan.

B. Sundberg, P. Aman, and H. Anders- HV083 son. Oat beta-glucan increases bile acid excretion and a fiber-rich barley fraction increases cholesterol excretion in ileostomy subjects. Amer J Clin HV084... 

Zheng, R. Hess, K. Ostergren, ]. Haworth and N. Knutson. Beta-glucan franctions from barley and oats are similarly antiatherogenic in hypercho-lesterolemic Syrian golden hamsters. J Nutr 2003 133(2) 468-475. 

Glucanase -Glucans of barley oats Reductions of sticky droppings Improved feed utilization... 

Lazaridou, A., Biliaderis, C.G. (2009). Concurrent phase separation and gelation in mixed oat p-glucans/sodium caseinate and oat p-glucans/pullulan aqueous dispersions. Food Hydrocolloids, 23, 886-895. 

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