Sea buckthorn leaf tea is an herbal beverage made from the leaves of sea buckthorn plant ( Hippophae rhamnoides L.). However, the sea buckthorn leaf green tea suffers from drawbacks such as a pronounced grassy odor. In the present study, therefore, the processing techniques for Fuzhuan brick tea were applied to produce Fuzhuan brick sea buckthorn leaf tea, aiming at improving the flavor profile of sea buckthorn leaf tea. In Fuzhuan brick sea buckthorn leaf tea, 105 and 58 volatile compounds, primarily composed of alcohols, aldehydes, esters, and ketones, were identified by HS-SPME-GC-MS and GC-IMS, respectively. With the help of aroma activity value and a random forest classification model, α-terpineol, linalool, nerol, trans-2-nonenal, and methyl salicylate were identified as the key flavor compounds for Fuzhuan brick sea buckthorn leaf tea. These compounds were the primary contributors to the floral, fungal, woody, and minty aromas of Fuzhuan brick sea buckthorn leaf tea.
This study was conducted to investigate the effects of replacing dietary lipid source FO with a terrestrial lipid blend (LB) on the growth performance, body composition and immunity of juvenile Japanese sea bass when the dietary n-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFAs) requirements are met ( Lateolabrax japonicus ). Two types of experimental diets were formulated with the total FO (the control) or the LB (linseed oil and lard = 1:1). A 56-day feeding trial was conducted in floating cages with three replicates for each treatment. The results indicated that a significantly higher specific growth rate (SGR) and feed efficiency ratio (FER) occurred in fish that were fed the LB diet compared with the control group ( p < 0.05). There was no significant difference in the survival rate, body composition or body indicates between the groups ( p > 0.05). The respiratory burst, alternative complement pathway activity, lysozyme activity, cytokine genes expression and air exposure test results indicated that the replacement of FO with LB did not significantly affect the nonspecific immunity or stress resistance ( p > 0.05). The serum antioxidant enzyme activities and liver tissue antioxidant-related gene expression were significantly higher in the control group than in the other group ( p < 0.05). Therefore, the terrestrial lipid blends from linseed and lard (1:1) could be used as an alternative for dietary fish oil without compromising the growth performance, nonspecific immunity and resistance to stress in juvenile Japanese sea bass.
危险品化学品经营许可证（带存储）