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Effects of Different Wall Materials on the Microstructure and Thermal Stability of Green Coffee Oil Microcapsules
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Jingyi MU1, 2, Faguang HU3, Zhenzhen ZHANG1, *, Wenjiang DONG2, 4, *, Ya'nan LI3, Xiaofei BI3, Rongsuo HU2, 4, Xiao'ai CHEN2, 4
Chinese Journal of Tropical Crops | 2023, 44(3) : 647 - 660
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Chinese Journal of Tropical Crops | 2023, 44(3): 647-660
• Post-harvest Treatment & Quality Safety •
Effects of Different Wall Materials on the Microstructure and Thermal Stability of Green Coffee Oil Microcapsules
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Jingyi MU1, 2, Faguang HU3, Zhenzhen ZHANG1, *, Wenjiang DONG2, 4, *, Ya'nan LI3, Xiaofei BI3, Rongsuo HU2, 4, Xiao'ai CHEN2, 4
Affiliations
  • 1.College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi, Xinjiang 830053, China
  • 2.Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, Hainan 571533, China
  • 3.Institute of Tropical and Subtropical Economic Crops, Yunnan Academy of Agricultural Sciences, Baoshan, Yunnan 678000, China
  • 4.Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning, Hainan 571533, China
Published: 2023-03-25 doi: 10.3969/j.issn.1000-2561.2023.03.022
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In this paper, three types of green coffee oil microcapsules were prepared by complex coacervation using the combination of gum arabic (GA) with soybean isolate protein (SPI), whey isolate protein (WPI) and sodium caseinate (SC) as wall materials, respectively. The turbidity, infrared spectral characteristics, apparent morphology and fluorescence co-localization of the wall materials were analyzed by combining different characterization techniques; the encapsulation efficiency, morphology, particle size, structural characterization and thermal stability of the three green coffee oil microcapsules were compared. Gum arabic and different proteins formed complexes through electrostatic interactions, which can be used as a new wall material for encapsulating green coffee oil. Infrared spectral analysis showed that the three wall materials could encapsulate green coffee oil better. The encapsulation rate in a descending order was SPIGA-GCO (69.26%), SCGA-GCO (58.69%), WPIGA-GCO (52.57%). The microstructure of green coffee oil microcapsules had a flat surface without obvious cracks, among which the oil droplets were more uniformly distributed in SPIGA-GCO. DSC analysis showed that the thermal denaturation temperature of microcapsules was higher (103.93-108.33 ℃), with good thermal stability. The results showed that the performance of SPIGA-GCO microcapsules was significantly better than the microcapsule products prepared from the other two wall materials. This study would provide technical support for the development of stable and effective green coffee oil microencapsulated products, and also provide a theoretical basis for the high value utilization of green coffee oil.

green coffee oil  /  microcapsules  /  complex coacervation  /  structural characterization  /  thermal stability
Jingyi MU, Faguang HU, Zhenzhen ZHANG, Wenjiang DONG, Ya'nan LI, Xiaofei BI, Rongsuo HU, Xiao'ai CHEN. Effects of Different Wall Materials on the Microstructure and Thermal Stability of Green Coffee Oil Microcapsules[J]. Chinese Journal of Tropical Crops, 2023 , 44 (3) : 647 -660 . DOI: 10.3969/j.issn.1000-2561.2023.03.022
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Year 2023 volume 44 Issue 3
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Article Info
doi: 10.3969/j.issn.1000-2561.2023.03.022
  • Receive Date：2022-07-05
  • Online Date：2026-03-05
  • Published：2023-03-25
Article Data
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History
  • Received：2022-07-05
  • Revised：2022-08-31
Funding
Affiliations
    1.College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi, Xinjiang 830053, China
    2.Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, Hainan 571533, China
    3.Institute of Tropical and Subtropical Economic Crops, Yunnan Academy of Agricultural Sciences, Baoshan, Yunnan 678000, China
    4.Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning, Hainan 571533, China
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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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