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| Analysis of composition of wheat germ and physicochemical properties and nutritional components of its oil |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240340 |
| KeyWord:wheat germ composition wheat germ oil physicochemical indexes nutritional component |
| FundProject:河南省科技研发计划联合基金项目(232103810067) |
| Author Name | Affiliation | | CHEN Mingxia1, CHEN Yao2, ZHENG Haijie2, MENG Wei3,
BAI Ruoxuan1, LI Feiyang1, CHEN Jingnan1 | 1.College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
2.Shandong Xiangchi Grain and Oil Co. , Ltd. , Binzhou 251499, Shandong, China
3.Henan Jinyuan Grain and Oil Co. , Ltd. , Zhengzhou 450000, China |
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| Abstract: |
| Aiming to provide reference for the effective development and utilization of wheat germ resources, wheat germ was used as raw material and its composition was analyzed,wheat germ oil was extracted by solvent method, and the basic physicochemical indexes, glycerides composition,fatty acid composition and nutrient(sterol, tocopherol) content of wheat germ oil were determined. The results showed that the carbohydrate content in wheat germ was (40.87±0.10)%, the protein content was (29.76±0.05)%, the moisture content was (13.95±0.01)%, the crude fat content was (10.95±002)%, and the ash content was (447±000)%.Wheat germ protein contained 8 essential amino acids required by the human body, and lysine, the first limiting amino acid in cereals, amounted to 5.57 g/100 g.Wheat germ oil had a acid value of (5.17±0.06) mgKOH/g, peroxide value of (0.21±0.00) mmol/kg, unsaponifiable matters content of (3.96±0.00)%, saponification value of (183.71±0.02)mgKOH/g, phospholipids content of (1.49±0.03)%, and iodine value of (133.78±0.07)g/100 g. The contents of triglyceride,diglyceride and monoglyceride in wheat germ oil were (86.94±1.04)%, (5.95±0.50)% and (4.08±0.10)%,respectively. The main fatty acid composition and content of wheat germ oil were linoleic acid (58.47±0.10)%, palmitic acid (16.33±0.08)%, oleic acid (13.67±0.10)%, linolenic acid (6.28±008)%, etc., the unsaturated fatty acid content was 79.97%, and the main distribution of linoleic acid was in the sn-2 position.The content of sterols in wheat germ oil was (3 554.55±53.20)mg/100 g, mainly including β-sitosterol, campesterol and stigmasterol, among which sterol ester accounted for 63.52% of total sterols. The content of tocopherol in wheat germ oil was (304.13±10.25)mg/100 g, including α-, β-tocopherol and γ-tocopherol, and the content of α-tocopherol was the highest, accounting for 65.26%. In summary, wheat germ is of high nutritional value and has great potential in the development of functional foods and new resource foods. |
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