|
| Optimization of rapeseed oil degumming and deodorization process |
| |
| DOI： |
| KeyWord:rapeseed oil PLA1 pre-degumming PLC re-degumming low-temperature short-term two-stage capture reflux deodorization |
| FundProject:2022年湖北省揭榜制项目“低温压榨菜籽油加工工艺及关键装备研究开发”（08022243） |
| Author Name | Affiliation | | HONG Kunqiang1,2, LUO Zhi1, YE Zhan3, LEI Fenfen1,2,
ZHONG Wu1,2, HE Dongping1,2 | 1.College of Food Science and Engineering, Wuhan Ploytechnic University, Wuhan 430023, China
2.State Key Laboratory of Market Supervision, Wuhan 430023, China
3.School of Food
Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, Chin |
|
| Hits: 2928 |
| Download times: 3369 |
| Abstract: |
| To provide a reference for the moderate refining of rapeseed oil, crude rapeseed oil (693.00 mg/kg of phosphorus) was used as raw material, PLA1 was used for pre-degumming, and then PLC was used for re-degumming, and the degummed oil was deodorized by low-temperature short-term two-stage capture reflux deodorization process. The PLA1 pre-degumming process was optimized by single factor experiment and response surface methodology with phosphorus content as index. The deodorization process was optimized by single factor experiment and orthogonal experiment with tocopherol loss rate as index. In addition, the effects of different degumming methods ( PLA1-PLC composite degumming, PLC degumming, hydration degumming ) and different deodorization processes ( low-temperature short-term two-stage capture reflux deodorization process and conventional deodorization process) were compared. The results showed that the optimal process conditions for PLA1 pre-degumming were as follows: citric acid (45 g/100 mL) dosage 3.3 mL/kg, PLA1 (10 U/mL) dosage 44.0 mL/kg, degumming temperature 54.0 ℃, and degumming time 1.4 h. Under the optimal conditions, the phosphorus content of PLA1-PLC composite degummed rapeseed oil decreased (99.01±0.05)% compared with crude rapeseed oil. Compared with other degumming methods, PLA1-PLC composite degumming method had higher degumming efficiency. The optimal deodorization conditions were deodorization temperature 220 ℃ and deodorization time 80 min. Under the optimal conditions, the tocopherol loss rate was less than 10%, and the relative content of each tocopherol monomer remained basically unchanged. Compared with the conventional deodorization process, the low-temperature short-term two-stage capture reflux deodorization process had the advantages of low energy consumption and low tocopherol loss rate. In summary, the PLA1-PLC composite degumming and low-temperature short-term two-stage capture reflux deodorization processes can improve the quality of rapeseed oil and have a good market application prospect. |
| View full text View/Add Comment Download reader |
| Close |
|
|
|
