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介绍低聚木糖的一些基本功能,从低聚木糖在乳制品中的应用出发,详细的说明了低聚木糖添加到乳制品中的优点.同时又介绍了低聚木糖在乳制品应用中的国内外发展概况以及低聚木糖在乳品行业的发展方向. 相似文献
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为了改变消费者的不良饮食习惯,减少环境污染及抗生素的不合理使用而导致的微生态失调,详细介绍了益生元的制备方法,同时介绍了Fm型低聚果糖、GFn型低聚果糖(蔗果低聚糖)、生产蔗果低聚糖的酶、低聚果糖的理化性质和应用、低聚木糖的生理功能和制法、木聚糖酶、低聚木糖的性质和组成. 相似文献
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低聚木糖的生产及应用研究综述 总被引:7,自引:0,他引:7
具有保健功能的低聚糖作为新型的食品添加剂越来越被人们所关注。低聚木糖的特性及功能性比其他低聚糖优越,倍受人们关注。本文对低聚木糖的组成、理化性质、保健功能做了介绍,对低聚木糖的应用及开发前景和生产情况做了比较全面的概括。 相似文献
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胡芦巴中性多糖酸水解工艺优化的研究 总被引:2,自引:0,他引:2
本文对胡芦巴中性多糖酸水解的工艺条件进行研究。以还原糖得率为指标,采用L9(34)正交设计对酸浓度、反应时间、反应温度的参数进行优选。结果表明,从水解产物低聚糖产量考虑,6mol/L盐酸浓度,100℃反应温度,1h反应时间为最佳工艺条件,此时低聚糖的得率为43.97%,低聚糖的分子量约为500~1000Da;以获得较小分子量的低聚糖为目的,则6mol/L盐酸浓度,90℃反应温度,2h反应时间为最佳实验条件,此时低聚糖的分子量约为300~750Da,得率为13.52%。 相似文献
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豆腐凝固剂主要有传统盐卤和熟石膏,及近年发展应用葡萄糖酸内酯,但现有凝固剂制成豆腐货架期均较短;壳低聚糖能使大豆蛋白发生胶凝,具有较强抑菌作用,能有效延长豆腐货架期。该文综述壳低聚糖作为豆腐凝固剂研究进展,分析壳低聚糖替代现有豆腐凝固剂优势及存在难点。 相似文献
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研究低聚壳聚糖(COS)与α-丙氨酸/天冬酰胺(低聚壳聚糖的羰基与氨基的物质量比均为4:1)的美拉德反应。醇沉法提取与α-丙氨酸/天冬酰胺反应8、16h以及24h的低聚壳聚糖衍生物,分别记为:CA-8、CA-16、CA-24、CN-8、CN-16以及CN-24。对衍生物进行红外表征,并研究其对超氧阳离子O2.-、DPPH自由基的清除能力以及还原能力。结果显示:美拉德反应后低聚壳聚糖衍生物抗氧化能力得到显著提高。抗氧化能力强弱次序为CA-8>CN-8、CA-16>CN-16、CA-24>CN-24,即随着反应时间增加,低聚壳聚糖与α-丙氨酸美拉德反应的衍生物抗氧化性始终更强,表明与小分子氨基酸进行美拉德反应制得的壳聚糖衍生物具有更好的抗氧化性。 相似文献
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Yamamoto K 《Journal of Bioscience and Bioengineering》2001,92(6):493-501
The chemo-enzymatic synthesis of a glycopeptide, which involves the chemical synthesis of N-acetylglucosaminyl peptide and the enzymatic transfer of oligosaccharide, is described. The first step of the chemo-enzymatic method is the chemical synthesis of N-acetylglucosaminyl peptide with an N-acetylglucosamine moiety bound to the asparaginyl residue of the peptide by a solid-phase method. The second step is transglycosylation of a complex-type oligosaccharide derived from a glycopeptide to an N-acetylglucosaminyl peptide by endo-beta-N-acetylglucosaminidase of Mucor hiemalis (Endo-M). Peptide T can block HIV infection of human T cells. We added the sialo-complex-type oligosaccharide to chemically synthesized N-acetylglucosaminyl Peptide T using the transglycosylation activity of Endo-M. The glycosylated Peptide T thus produced showed a higher degree of resistance to protease digestion than Peptide T. We also prepared calcitonin glycopeptide. Calcitonin is a calcium-regulating hormone that is widely used in therapy for hypercalcemia, and is glycosylated by the chemo-enzymatic method described above. This glycopeptide demonstrated sufficient physiological activity. Comparison of NMR data between native calcitonin and calcitonin glycopetide revealed that the glycosylation does not affect the binding topology of the peptide. N-Acetylglucosaminyl glutamine was also a good glycoside acceptor of Endo-M. We were able to add the sialo-complex-type oligosaccharide to the glutamine residue of the Substance P neuropeptide using the transglycosylation activity of Endo-M. The glycosylated Substance P was biologically active, although its activity was rather low, and stable against peptidase digestion. The oligosaccharide moiety attached to the l-glutamine residue of the peptide was not liberated by PNGase that liberated asparagine-linked oligosaccharide from glycopeptides. 相似文献