FOOD CHEMISTRY
·
2025
·
IF 9.8
Hongli Li,Na Zhang,Jie Qiang,Yongsheng Cao,Guoyi Qu,Xiuzhu Yu
Olives are prone to deterioration during storage, and suitable storage conditions must, therefore, be established to maintain the quality of the fruit and oil. This study investigated the effect of storing olives at room temperature (23 ± 2 °C), refrigerated (4 °C), and frozen (−20 °C) conditions for 7 d on the quality of virgin olive oil (VOO). No significant differences ( p < 0.05) were observed in the fatty acid, squalene, and phytosterol content of VOO across the three storage conditions. Room temperature storage produced the highest oil yield but resulted in ‘fermentation’ and ‘moldy’ off-flavors. Refrigerated VOO retained a more intense ‘grass’ aroma and higher levels of pigments, α-tocopherol, and total phenols. In contrast, freezing led to significant losses in these components and produced the lowest oil yield. For optimal oil quality, olives should be stored at 4 °C if storage exceeds 24 h.
研究领域:
食品科学
·
植物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Yanhui Zhong,Wanting Huang,Chuang Zhang,Runkun Zhang,Yufei Hu,Xiaohua Xiao,Gongke Li
The addition of methyl tert-butyl ether (MTBE) can increase the octane number of gasoline to improve the combustion efficiency of gasoline. Because of the health effects on the population exposed to MTBE, limiting the addition of MTBE in gasoline will be thefuture development tendency. Here, a cyclic cataluminescence (CCTL) sensor array was utilized to monitor the addition of MTBE in gasoline. CCTL sensor obtained multistage signals ( I n ) on a single catalyst, which realized the function of the sensor array. MTBE trigger-CCTL reaction on 4 kinds of catalysts was investigated. Three brands (No. 92, 95, and 98) of gasoline triggered the CCTL reaction to obtain I n which conforms to the exponential decay equation (EDE). CCTL sensor was used to detect the volume ratio of MTBE to gasoline according to A and τ -values. The I n was applied to normalize and distinguish gasoline through linear discriminate analysis (LDA) and hierarchical cluster analysis (HCA). The τ -values of gasoline on 4 catalysts generated a digital code to differentiate each gasoline. CCTL virtual sensor arrays own the sensor array function and provide a promising technology for gasoline quality analysis.
研究领域:
化学传感
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
·
2016
·Vol. 179
·期 8
·1325-1335
·
IF 1.606
Tan Zhi-jian,Yang Zi-zhen,Yi Yong-jian,Wang Hong-ying,Zhou Wan-lai,Li Fen-fang,Wang Chao-yun
In this study, enzyme-assisted three-phase partitioning (EATPP) was used to extract oil from flaxseed. The whole procedure is composed of two parts: the enzymolysis procedure in which the flaxseed was hydrolyzed using an enzyme solution (the influencing parameters such as the type and concentration of enzyme, temperature, and pH were optimized) and three-phase partitioning (TPP), which was conducted by adding salt and t -butanol to the crude flaxseed slurry, resulting in the extraction of flaxseed oil into alcohol-rich upper phase. The concentration of t -butanol, concentration of salt, and the temperature were optimized to maximize the extraction yield. Under optimized conditions of a 49.29 % t- butanol concentration, 30.43 % ammonium sulfate concentration, and 35 °C extraction temperature, a maximum extraction yield of 71.68 % was obtained. This simple and effective EATPP can be used to achieve high extraction yields and oil quality, and thus, it is potential for large-scale oil production.
研究领域:
食品科学
·
生物技术
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Dan Zhou,Xue Zhou,Qinglong Shi,Jiangbo Pan,Huashu Zhan,Fahuan Ge
High-pressure supercritical carbon dioxide extraction (HPSE) was used for extraction oil from Idesia polycarpa (I. polycarpa) at extraction pressure up to 65 MPa. A series of important process parameters were investigated by response surface methodology (RSM) to obtain high extraction yield. Under the optimum conditions, the highest extraction yield was 21.42 ± 0.31 %. The quality of oil was evaluated in terms of extraction yield, nutritional ingredients such as γ-tocopherol, DL-α-tocopherol, β-sitosterol and squalene, fatty acids profile, antioxidant activity and physicochemical indices of oil and compared to the oil obtained by lower extraction pressures at 35 MPa and 50 MPa, respectively. The results proved that HPSE could increase the I. polycarpa oil extraction recovery and improve the quality of oil with higher nutritional ingredients content, lower acid value and better antioxidant activity. Furthermore, it could not change the fatty acids composition and have no harmful ingredients under the high extraction pressure.
研究领域:
食品科学
·
植物化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）