The residue was washed with dilutehydrochloricacid solution, The precipitation was dried, purified, and identified by the infrared spectrometry (IR) and high mass spectrometry(HRMS)with DES-HS.
反应产物用稀盐酸溶液洗涤，将所得沉淀干燥后经分离纯化，对纯化产物进行高分辨质谱、红外光谱鉴定。
2
Under the proper temperature, the proper dilutehydrochloricacid liquid can reach 20% or so of pectin production rate.
适当浓度的盐酸在适当的温度、时间下可以得到20%左右的果胶产率。
3
Difficult to dissolve in water, soluble in dilutehydrochloricacid and nitric acid, in the air and stability.