超声波辅助酶结合碱法提取薯渣纤维素的工艺研究

以甘薯渣为原料,采用超声波辅助酶结合碱法从甘薯渣中提取纤维素。通过单因素及正交实验,确定了最佳提取工艺条件。结果表明,在超声波功率为105W辅助下,提取薯渣纤维素的最佳工艺条件为,α-淀粉酶的用量0.6%、酶解时间45min、氢氧化钠浓度7%和碱解时间90min,在此条件下产品纤维素的含量为80.09%,并测定其持水性和溶胀性分别为5.34g/g和10.53mL/g,均优于酶结合碱法,是一种可行,高效的方法。

Study on optimization of ultrasonic-assisted enzymatic extraction combined with alkaline hydrolysis of cellulose from sweet potato residue

Sweet potato residue as raw material,used the ultrasonic-assisted enzymatic alkaline method extracted the cellulose from sweet potato residue.Through the optimization by single factor and orthogonal array design methods,the optimum hydrolysis conditions for the extraction of cellulose from sweet potato residue were determined to be:ultrasonic power 105W,enzyme concentration 0.6%,length of enzyme hydrolysis time 45min,NaOH concentration 7%,alkaline hydrolysis time 90min.Under these optimal conditions,the extraction yield of cellulose reached up to 80.09%,the water holding capacity and swelling capacity were 5.34g/g and 10.53mL/g,respectively.That was better than the enzyme combination alkaline process,and also a feasible and efficient method.