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KMID : 1007520230320142043
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Food Science and Biotechnology
2023 Volume.32 No. 14 p.2043 ~ p.2055
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Health oil preparation from gardenia seeds by aqueous enzymatic extraction combined with puffing pre-treatment and its properties analysis
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Chengyu Jin
Lingyun Wang
Xiaoying Liu
Yuanchao Lu
Ningxiang Yu
Xiaohua Nie
Minh Tu Nguyen
Xianghe Meng
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Abstract
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Gardenia jasminoides Ellis, a representative for “homology of medicine and food”, can be used to produce pigment and edible oil. Here, aqueous enzymatic extraction (AEE) combined with puffing pre-treatment was explored to prepare oil from gardenia seeds. Both wet-heating puffing (WP) at 90 °C and dry-heating puffing (DP) at 1.0 MPa facilitated the release of free oil by AEE, resulting in the highest free oil yields (FOY) of 21.8% and 23.2% within 3 h, much higher than that of un-puffed group. Additionally, active crocin and geniposide were also completely released. The FOY obtained was much higher than mechanical pressing method (10.44%), and close to solvent extraction (25.45%). Microstructure analysis indicated that gardenia seeds expanded by dry-heating puffing (1.0 MPa) had a larger, rougher surface and porous structure than other groups. Overall, AEE coupled with puffing pre-treatment developed is an eco-friendly extraction technology with high efficiency that can be employed to oil preparation.
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KEYWORD
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Gardenia seed oil, Puffing pre-treatment, Aqueous enzymatic extraction, Free oil yield, Crocin, Geniposide
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