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Technical Study on the Extraction and Emulsification of Freeze-dried Green Pepper Oleoresin
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Peng ZHANG1, 2, Chaohua ZHANG2, Guiping WU2, Fenglin GU2, Weicheng HU3, Lingjun ZHENG4, Fan XIE4, Meifang HOU1, Jae Youl CHO5
Chinese Journal of Tropical Crops | 2026, 47(3) : 777 - 787
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Chinese Journal of Tropical Crops | 2026, 47(3): 777-787
• Post-harvest Treatment & Quality Safety •
Technical Study on the Extraction and Emulsification of Freeze-dried Green Pepper Oleoresin
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Peng ZHANG1, 2, Chaohua ZHANG2, Guiping WU2, Fenglin GU2, Weicheng HU3, Lingjun ZHENG4, Fan XIE4, Meifang HOU1, Jae Youl CHO5
Affiliations
  • 1.Shanghai Institute of Technology, Shanghai 201418, China
  • 2.Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences/National Center of Important Tropical Crops Engineering and Technology Research/Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning, Hainan 571533, China
  • 3.Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
  • 4.School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
  • 5.Department of Integrative Biotechnology, and Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
Published: 2026-03-25 doi: 10.3969/j.issn.1000-2561.2026.03.021
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To address the issues of low added value in traditional pepper processing, poor fluidity of pepper oleoresin, and the incomplete extraction and emulsification techniques for freeze-dried green pepper oleoresin, this study used freeze-dried green pepper as raw material to prepare pepper oleoresin through ultrasonic-microwave assisted extraction. The volatile components were analyzed by gas chromatography-mass spectrometry (with cyclohexanone as the internal standard), and a mixed emulsi-system of Tween 80 and Span 80 was selected to investigate the effects of pH, ionic strength, and water content on the of the emulsion. The results showed that a total of 37 volatile compounds were detected in the pepper oleoresin, mainly monoterpenes and sesquiterpenes, among which β-caryophyllene (210.83 mg/mL) had a relatively high content. The ideal value of the mixed emulsifier was approximately 11. Under the conditions of pH 8.0-9.0, without adding NaCl, and a water content of 95%, the emulsion had a lower particle size and stable physicochemical properties. This study optimized the extraction and emulsification process of freeze-dried green pepper oleoresin, providing technical support for its development and utilization as well as the upgrading of the pepper industry's deep processing.

freeze-dried green pepper  /  pepper oleoresin  /  extraction  /  emulsification process
Peng ZHANG, Chaohua ZHANG, Guiping WU, Fenglin GU, Weicheng HU, Lingjun ZHENG, Fan XIE, Meifang HOU, Jae Youl CHO. Technical Study on the Extraction and Emulsification of Freeze-dried Green Pepper Oleoresin[J]. Chinese Journal of Tropical Crops, 2026 , 47 (3) : 777 -787 . DOI: 10.3969/j.issn.1000-2561.2026.03.021
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Year 2026 volume 47 Issue 3
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Article Info
doi: 10.3969/j.issn.1000-2561.2026.03.021
  • Receive Date：2025-09-26
  • Online Date：2026-06-26
  • Published：2026-03-25
Article Data
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History
  • Received：2025-09-26
  • Accepted：2025-12-04
Funding
Affiliations
    1.Shanghai Institute of Technology, Shanghai 201418, China
    2.Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences/National Center of Important Tropical Crops Engineering and Technology Research/Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning, Hainan 571533, China
    3.Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
    4.School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
    5.Department of Integrative Biotechnology, and Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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