Amphoteric starch containing carboxyl and cationic groups
    8.
    发明授权
    Amphoteric starch containing carboxyl and cationic groups 失效
    含有羧基和阳离子基团的两性淀粉

    公开(公告)号:US5417755A

    公开(公告)日:1995-05-23

    申请号:US262898

    申请日:1994-06-21

    摘要: An amphoteric starch containing carboxyl and cationic groups characterized in that its carboxyl groups originate from the selective oxidation of the hemiacetal groups of the cationic starch and possibly of the hemiacetal groups of its products of acid hydrolysis. The process for producing the amphoteric starch consists in reacting a cationic starch in aqueous solution with hydrogen peroxide and hydrobromic acid or bromine, so as to oxidize selectively the hemiacetal groups of the cationic starch and, where appropriate, the hemiacetal groups of its products of acid hydrolysis, to give carboxyl groups.

    摘要翻译: 含有羧基和阳离子基团的两性淀粉的特征在于其羧基起源于阳离子淀粉的半缩醛基团的选择性氧化,以及可能的酸水解产物的半缩醛基团。 生产两性淀粉的方法是使阳离子淀粉在水溶液中与过氧化氢和氢溴酸或溴反应,以便选择性地氧化阳离子淀粉的半缩醛基团,并且在适当时氧化其产物的半缩醛基团 水解,得到羧基。

    Process for cyclo-dehydrating ketoses
    9.
    发明授权
    Process for cyclo-dehydrating ketoses 失效
    环脱水酮酮的方法

    公开(公告)号:US4737584A

    公开(公告)日:1988-04-12

    申请号:US723965

    申请日:1985-04-05

    摘要: The invention concerns a process for dehydrating glucides and applicable to those glucides of which the molecule includes at least one ketose type group, being characterized in that the glucide is made to react without addition of water with a hydrogen halide, whereupon the hydrogen halide is eliminated by evaporation in order to collect the formed disaccharide anhydride.The invention also relates to novel products characterized by essentially consisting of saccharide anhydrides of which the molecule includes two saccharide cycles linked to each other by two acetal bonds included in a dioxane cycle. As a rule at least one of the saccharide cycles is that of fructose (and may be substituted), and this cycle is linked by a spirane bond to the dioxane cycle.Product application as food additives.

    摘要翻译: PCT No.PCT / FR84 / 00186 Sec。 371日期:1985年4月5日 102(e)日期1985年4月5日PCT提交1984年8月8日PCT公布。 第WO85 / 00814号公报 日本1985年2月28日。本发明涉及一种脱水糖苷的方法,适用于其中分子包含至少一个酮糖型基团的那些糖类,其特征在于使糖与无卤素的水反应而进行反应 由此通过蒸发除去卤化氢以收集形成的二糖酐。 本发明还涉及基本上由糖酐组成的新产品,其中该分子包括通过二恶烷循环中包含的两个缩醛键彼此连接的两个糖循环。 通常至少一个糖循环是果糖(并且可以被取代),并且该循环通过螺环键连接到二恶烷循环。 产品应用作为食品添加剂。