EFFECTS OF STERILIZATION TREATMENTS ON SOME PROPERTIES OF ALGINATE SOLUTIONS AND GELS
EFFECTS OF STERILIZATION TREATMENTS ON SOME PROPERTIES OF ALGINATE SOLUTIONS AND GELS
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DOI：
10.1021/bp00001a008
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发表时间：
1990-01-01
影响因子：
2.9
通讯作者：
MALONE, DM
中科院分区：
文献类型：
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作者：
LEO, WJ;MCLOUGHLIN, AJ;MALONE, DM
对海藻酸钠水溶液进行各种热灭菌处理。海藻酸钠粉末也用γ-辐照和环氧乙烷灭菌。定量测定了这些处理对海藻酸钠溶液的粘度以及在0.1 M CaCl 2溶液中形成的珠粒的直径和强度的影响。随着灭菌温度的升高，海藻酸钠溶液的粘度和海藻酸钙微球的凝胶强度降低，而微球的直径增加。所有这些效果可归因于热处理导致的藻酸盐分子聚合度的降低。环氧乙烷和γ-辐射处理引起类似的效果。标准的灭菌条件对于与藻酸盐珠的比较研究是必要的。
Aqueous sodium alginate solutes were subjected to various heat sterilization treatments. Sodium alginate powder was also treated by both .gamma.-irradiation and ethylene oxide sterilization. The effects of these treatments on the viscosities of sodium alginate solutions and both the diameter and strength of the beads formed in 0.1 M CaCl2 solutions were determined quantitatively. The viscosity of sodium alginate solutions and the gel strength of the calcium alginate beads decreased with increasing sterilization temperature while the bead diameters were found to increase. All these effects can be attributable to a reduction in the degree of polymerization of the alginate molecules as a result of the heat treatments. Ethylene oxide and .gamma.-irradiation treatments caused similar effects. Standard conditions for sterilization are necessary for comparative studies with alginate beads.