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| Aqueous extraction technology of bitter almond oil aided by sucrose solution |
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| KeyWord:bitter almond oil sucrose solution aqueous extraction hydrocyanic acid physicochemical property |
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| Abstract: |
| In order to improve emulsification and reduce the content of hydrocyanic acid (HCN) in bitter almond oil, sucrose solution was used in aqueous extraction of bitter almond oil. Based on single factor experiment, the concentration of sucrose solution, extraction temperature and liquid-solid ratio were selected as key factors affecting the oil extraction rate, and response surface methodology was used to optimize the extraction process. The results showed that the extraction temperature and concentration of sucrose solution had great influences on the oil extraction rate. The optimal conditions were obtained as follows: concentration of sucrose solution 0.27 mol/L, extraction temperature 94.5?℃, liquid-solid ratio 6∶1 and extraction time 3 h. Under these conditions, the oil extraction rate could reach 73.01%. Compared with traditional extraction process, the content of HCN in the oil extracted by water and aided by sucrose solution decreased significantly, which was 7.74 mg/kg, and it had certain superiority. Acid value and peroxide value of the crude bitter almond oil met the national quality standards, which proved that aqueous extraction technology of bitter almond oil aided by sucrose solution had the prospect of promotion and application. |
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