摘要：采用麦麸阿拉伯木聚糖提取的碱提工艺，调整工艺过程中的NaOH浓度

摘要：采用麦麸阿拉伯木聚糖提取的碱提工艺，调整工艺过程中的NaOH浓度，提取出三种不同浓度的阿拉伯木聚糖，再用地衣酚盐酸法测定含量，并对其稳定性作了考察。结果表明三组阿拉伯木聚糖在90℃以上的热水中能快速溶解，遮光条件下能增加其稳定性；NaOH为0.4mol/L和NaOH为0.5mol/L提取的阿拉伯木聚糖的抗氧化性优于0.6mol/L提取的阿拉伯木聚糖；NaOH为0.6mol/L提取的阿拉伯木聚糖抗还原性较好，而NaOH为0.4mol/L和NaOH为0.5mol/L提取的阿拉伯木聚糖抗还原性较差。三组阿拉伯木聚糖在PH=6-8的溶液条件下较稳定，NaOH为0.6mol/L提取的阿拉伯木聚糖在pH=6-8时较稳定，说明碱浓度的提高增加了它在强碱下的稳定性。
关键词：提取；阿拉伯木聚糖；稳定性

結果 (中文) 3:

Abstract: the Arabia wheat bran xylan extraction alkali extraction process, the concentration of NaOH in the process of adjustment, extract of three kinds of Arabia xylan concentration, content determination and orcinol hydrochloric acid method, and its stability were investigated. Results showed that three groups of xylan in Arabia hot water above 90 degrees can be rapidly dissolved, the shading condition can increase its stability; NaOH for 0.4mol/L and NaOH for the Arabia Arabia wood xylan chitosan 0.5mol/L extraction of antioxidant extract is better than that of 0.6mol/L; Arabia NaOH 0.6mol/L wood chitosan extraction reduction resistant wood better, Arabia NaOH 0.4mol/L and NaOH chitosan for 0.5mol/L extraction resistance to reduction of the poor. The three group of Arabia xylan was stable in solution under the conditions of PH=6-8, Arabia NaOH 0.6mol/L wood chitosan extraction was stable in pH=6-8, shows that the alkali concentration increase with the increase of its stability in alkali conditions.Key words: extraction; Arabia; stability