欢迎访问林业科学,今天是

林业科学 ›› 2010, Vol. 46 ›› Issue (3): 74-79.doi: 10.11707/j.1001-7488.20100312

• 论文 • 上一篇    下一篇

不同pH对扁桃胶水解物晶体特性的影响

王森1 谢碧霞1 钟秋平2 张琳1   

  1. 1.中南林业科技大学林学院长沙 410004; 2.中国林业科学研究院亚热带林业实验中心分宜 336600
  • 收稿日期:2009-10-17 修回日期:1900-01-01 出版日期:2010-03-25 发布日期:2010-03-25

Effects of pH on Crystalline Attribute of Almond Gum Hydrolysate

Wang Sen1,Xie Bixia1,Zhong Qiuping2,Zhang Lin1   

  1. 1.College of Forestry, Central South University of Forestry and Technology Changsha 410004;2.The Experimental Centre of Subtropical Forestry, CAF Fenyi 336600
  • Received:2009-10-17 Revised:1900-01-01 Online:2010-03-25 Published:2010-03-25

摘要:

利用RINT2000 vertical goniometer 型X-衍射仪测定不同pH条件下扁桃胶水解物的结晶度,研究不同pH条件对扁桃胶晶体特性的影响规律,并用电子显微镜观察水解物的微晶结构。结果表明: 1)pH的改变不仅能够使非晶体的扁桃胶表现出晶体特性,而且对晶相也有极显著的影响, 在pH 3~1,晶体结构与多糖的微纤维化有关,在pH 11~13,晶体与多糖的结构有关; 2)以pH 7为中心坐标,随着pH的不断降低,扁桃胶的结晶度变化符合方程y = 10.942 01 e-(x-2.230 06)2/1.872 403R2= 0.851 75);随着pH的不断增加,扁桃胶的结晶度变化规律符合方程y = -8.838 22+1.381 18xR2= 0.896 75)。

关键词: X-射线衍射光谱, 扁桃胶, 晶体特性柳杉, 细根衰老, 养分内循环, 养分迁移

Abstract:

Crystallization degree of almond gum hydrolysate was measured by using RINT2000 vertical goniometer X-ray diffractometer to determine the effects of different pH values on crystalline attributes of almond gum. Variation of pH values not only enabled almond gum (amorphous substance) to show crystalline attribute, but significantly (P<0.01) affected the crystalline phases. With decreasing of pH values from neutral point, the mathematical model of crystallinity variation of almond gum was y = 10.942 01 e-(x-2.230 06)2/1.872 403 R2= 0.851 75). In contrast, with increasing pH values from neutral point the mathematical model of crystallinity variation of almond gum was y = -8.838 22+1.381 18xR2= 0.896 75).

Key words: X-ray diffraction spectrum, almond gum, crystalline attribute