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Zeng W, Liu X, Chao Y, Wu Y, Qiu S, Lin B, Liu R, Tang R, Wu S, Xiao Z, Li C. The effect of extraction methods on the components and quality of Camellia oleifera oil: Focusing on the flavor and lipidomics. Food Chem 2024; 447:139046. [PMID: 38518620 DOI: 10.1016/j.foodchem.2024.139046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 03/02/2024] [Accepted: 03/13/2024] [Indexed: 03/24/2024]
Abstract
The objective of this study was to systematically elucidate the effects of conventional (Cold Pressing, CP; Hot Pressing, HP; Soxhlet Extraction; SE) and novel methods (Microwave-Assisted Extraction, MAE) on the physicochemical properties, bio-active substances, flavor and lipidomics of Camellia oleifera oil (COO). The cold-pressed COO contained the highest contents of squalene (176.38 mg/kg), α-tocopherol (330.52 mg/kg), polyphenols (68.33 mg/kg) and phytosterols (2782.55 mg/kg). Oleic acid was observed as the predominant fatty acid with the content of approximately 80%. HS-GC-IMS identified 47 volatile compounds, including 11 aldehydes, 11 ketones, 11 alcohols, 2 acids, 8 esters, 2 pyrazines, 1 furan, and 1 thiophene. A total of 5 lipid classes and 30 lipid subclasses of 339 lipids were identifed, among which TGs and DGs were observed as the major lipids. In summary, both cold-pressed and microwave-assisted technologies provided high-quality COO with high content of bio-active substances and diglycerides/triglycerides.
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Affiliation(s)
- Wenquan Zeng
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410004, China; State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China
| | - Xudong Liu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China
| | - Yan Chao
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China
| | - Yiying Wu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China
| | - Shukun Qiu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China
| | - Baining Lin
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China
| | - Rukuan Liu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China
| | | | - Suxi Wu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410004, China.
| | - Zhihong Xiao
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China.
| | - Changzhu Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China; Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function, Changsha 410004, China.
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Zhang W, Yu J, Wang D, Han X, Wang T, Yu D. Ultrasonic-ethanol pretreatment assisted aqueous enzymatic extraction of hemp seed oil with low Δ 9-THC. ULTRASONICS SONOCHEMISTRY 2024; 103:106766. [PMID: 38271781 PMCID: PMC10818077 DOI: 10.1016/j.ultsonch.2024.106766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/26/2023] [Accepted: 01/09/2024] [Indexed: 01/27/2024]
Abstract
In this study, ultrasonic-ethanol pretreatment combined with AEE was developed for oil extraction from hemp seeds. The oil yield reached a maximum of 23.32 % at 200 W ultrasonic power and 30 min ultrasonic time, at this point, the degradation rate of Δ9-THC was 83.11 %. By determining the composition of hemp seed before and after pretreatment, it was shown that ultrasonic-ethanol pretreatment reduced the protein content of the raw material. An enzyme mixture consisting of pectinase and hemicellulase (1/1/1, w/w/w) was experimentally determined to be used, and the AEE extraction conditions were optimized using the Plackett-Burman design and the Box-Behnken. The optimal conditions were determined to be pH 5, total enzyme activity of 37,800 U/g, liquid-solid ratio of 10.4 mL/g, enzyme digestion temperature of 32 °C, enzymatic time of 189 min, and oil recovery of 88.38 %. The results of confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM) showed that the emulsion formed during ultrasonic ethanol pretreatment was not uniformly distributed, and the droplets appeared to be aggregated; and the irregular pores of hemp seed increased after pretreatment. The contents of Δ9-THC and CBN in the extracted oil samples were 9.58 mg/kg and 52.45 mg/kg, respectively. Compared with the oil extracted by Soxhlet extraction (SE), the oil extracted by this experimental method was of better quality and similar in fatty acid composition.
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Affiliation(s)
- Wang Zhang
- School of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Jiaye Yu
- School of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Donghua Wang
- The University of Sheffield, Sheffield, S10 2TNc, United Kingdom
| | - Xiaoyu Han
- School of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Tong Wang
- School of Food Science, Northeast Agricultural University, Harbin 150030, China.
| | - Dianyu Yu
- School of Food Science, Northeast Agricultural University, Harbin 150030, China.
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