CAJ | 학술논문

为了获得高质量的棉籽油和棉粕,并实现副产物棉酚的精制,采用有机溶剂浸出技术研究棉仁中游离棉酚的提取工艺。在单因素试验的基础上,通过正交试验确定了70%丙酮提取游离棉酚的最优工艺条件。试验表明,对游离棉酚提取率影响的因素主次顺序为：提取次数,提取时间,料液比,提取温度；确定的最优提取工艺条件为：提取温度40℃,提取时间50 min,料液比1：15,提取次数3次,搅拌速率850 r/min；在最优工艺条件下,游离棉酚提取率为89.58%,棉粕中游离棉酚含量仅为400 mg/kg。分别对棉酚标准样品和棉仁中提取的棉酚提取液进行40℃加热处理,结果表明加热会导致游离棉酚转化为其他物质,从0h 加热到8h 时,棉酚提取液中的游离棉酚含量从68.19滋g/mL降至25.27滋g/mL,损耗率达到62.94%。
위료획득고질량적면자유화면박,병실현부산물면분적정제,채용유궤용제침출기술연구면인중유리면분적제취공예。재단인소시험적기출상,통과정교시험학정료70%병동제취유리면분적최우공예조건。시험표명,대유리면분제취솔영향적인소주차순서위：제취차수,제취시간,료액비,제취온도；학정적최우제취공예조건위：제취온도40℃,제취시간50 min,료액비1：15,제취차수3차,교반속솔850 r/min；재최우공예조건하,유리면분제취솔위89.58%,면박중유리면분함량부위400 mg/kg。분별대면분표준양품화면인중제취적면분제취액진행40℃가열처리,결과표명가열회도치유리면분전화위기타물질,종0h 가열도8h 시,면분제취액중적유리면분함량종68.19자g/mL강지25.27자g/mL,손모솔체도62.94%。
In order to get high-quality cottonseed oil and cottonseed meal and achieve the purification of gossypol byproduct, the process of extracting free gossypol from cottonseed kernel by organic solvent was studied. On the basis of single factor experiment,the optimal extraction conditions of free gossypol from cottonseed kernel by 70% of acetone were determined by orthogonal experiment. The results showed that the extraction times affected the extraction rate of free gossypol significantly, followed by extraction time, solid-liquid ratio and extraction temperature;the optimal extraction conditions were obtained as follows:extraction temperature 40℃, extraction time 50 min, solid-liquid ratio 1:15, extraction times three and stirring rate 850 r/min. Under the optimal conditions, the extraction rate of free gossypol reached 89. 58%, and the content of free gossypol in cottonseed meal was only 400 mg/kg. The gossypol standard sample and gossypol extracts from cottonseed kernel were heated at 40℃ respectively, the results indica-ted that free gossypol was easy to transform to other substances under heating. The content of free gossy-pol in gossypol extracts decreased from 68 . 19 μg/mL to 25 . 27 μg/mL when it was heated at 40℃ for 0-8 h, and the loss rate of free gossypol was 62. 94%.