食品研究与开发
食品研究與開髮
식품연구여개발
FOOD RESEARCH AND CEVELOPMENT
2015年
3期
82-84,114
,共4页
孙萍%黄国清%韩晓娜%肖军霞
孫萍%黃國清%韓曉娜%肖軍霞
손평%황국청%한효나%초군하
O-羧甲基壳聚糖%取代度%红外光谱
O-羧甲基殼聚糖%取代度%紅外光譜
O-최갑기각취당%취대도%홍외광보
O-carboxymethyl chitosan%the degree of substitution%infrared spectroscopy
O-羧甲基壳聚糖(OCC)是壳聚糖的一种重要的衍生物,具有良好的水溶性、胶凝性和生物相容性。采用氯乙酸法制备OCC,研究了氯乙酸和氢氧化钾(KOH)的用量以及反应温度、反应时间对OCC取代度的影响,并采用红外光谱分析了羧甲基的取代位置。结果表明,当壳聚糖:氯乙酸:KOH的质量比为2∶2.5∶2.7时,在50℃下分批加入氯乙酸,搅拌反应4 h,得到的OCC的取代度较高为0.78,而且红外光谱分析表明所制备的羧甲基壳聚糖即为O-羧甲基壳聚糖。
O-羧甲基殼聚糖(OCC)是殼聚糖的一種重要的衍生物,具有良好的水溶性、膠凝性和生物相容性。採用氯乙痠法製備OCC,研究瞭氯乙痠和氫氧化鉀(KOH)的用量以及反應溫度、反應時間對OCC取代度的影響,併採用紅外光譜分析瞭羧甲基的取代位置。結果錶明,噹殼聚糖:氯乙痠:KOH的質量比為2∶2.5∶2.7時,在50℃下分批加入氯乙痠,攪拌反應4 h,得到的OCC的取代度較高為0.78,而且紅外光譜分析錶明所製備的羧甲基殼聚糖即為O-羧甲基殼聚糖。
O-최갑기각취당(OCC)시각취당적일충중요적연생물,구유량호적수용성、효응성화생물상용성。채용록을산법제비OCC,연구료록을산화경양화갑(KOH)적용량이급반응온도、반응시간대OCC취대도적영향,병채용홍외광보분석료최갑기적취대위치。결과표명,당각취당:록을산:KOH적질량비위2∶2.5∶2.7시,재50℃하분비가입록을산,교반반응4 h,득도적OCC적취대도교고위0.78,이차홍외광보분석표명소제비적최갑기각취당즉위O-최갑기각취당。
O-Carboxymethyl chitosan (OCC) is an important derivative of chitosan and possesses good water solubility, gelling capacity and biocompatibility. In this paper, OCC was prepared in the chloroacetic acid method and the effects of the dosages of chloroacetic acid and potassium hydroxide (KOH), temperature and time on the degrees of substitution of OCC were studied and the substitution reaction location was analyzed with infrared spectroscopy (FTIR). The results showed that the optimum conditions for OCC preparation were:chitosan/chloroacetic acid/KOH ratio 2 ∶ 2.5 ∶ 2.7, temperature 50 ℃ and reaction duration 4 h. Under these conditions, the degrees of substitution of OCC reached 0.78. FTIR analysis confirmed that the substitution reaction occurred in the O atom.