Study on ultrahigh-pressure extraction technology on properties of yellow extract from gardenia fruit

• Published in: Journal of food composition and analysis 2021-12, Vol.104, p.104186, Article 104186
• Main Authors: Liqin, Tang, Haocheng, Liu, Jing, Wen, Yujuan, Xu, Wenni, Tian, Lu, Li, Yuanshan, Yu, Xian, Lin, Manqin, Fu
• Format: Article
• Language: English
• Subjects: Gardenia jasminoides; LC-TOF-MS/MS; Response surface methodology; Ultrahigh-pressure extraction
• ISSN: 0889-1575; 1096-0481
• DOI: 10.1016/j.jfca.2021.104186

•The main bioactive components of yellow extract (YE) were identified.•This is the first report that ultrahigh-pressure extraction (UPE) has increased the yield of YE.•Compared with ultrasonic and traditional extraction, the yield of YE in UPE was dramatically increased.•High temperature, alkali, Fe3+, and ultraviolet radiation greatly affected the stability of YE. The acquisition of yellow extract (YE) from gardenia (Gardenia jasminoides) fruit can promote the application of natural pigment. This study aims to establish an effective method for extracting YE from gardenia fruit and to evaluate the properties of YE. First, the seven compounds in YE obtained by ultrahigh-pressure extraction (UPE) were identified by LC-TOF-MS/MS. The effects of traditional extraction (TE), ultrasonic extraction (UE), and UPE methods on the yield of YE were then investigated. The results showed that the extraction yield of UPE was 7.73 ± 0.89 mg/g DW under the optimized conditions (47.78% ethanol concentration, 114.95 s time, and 18.08 mL/g liquid–solid ratio), which was higher than those of UE (4.81 ± 0.23 mg/g DW) and TE (3.55 ± 0.21 mg/g DW). Finally, the YE stability of UPE was studied. The results showed that the YE stability of UPE was similar to that of the TE group, and both of which were greatly affected by higher temperature (60–100 °C), ultraviolet radiation, alkalinity, and Fe3+. Meanwhile, YE of UPE had better stability under ultraviolet radiation and alkalinity in comparison with the TE group. Therefore, UPE is a potential method for YE extraction from gardenia fruit.