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Copyright of South China Fisheries Science is the property of South China Fisheries Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food & Fermentation Industries is the property of Food & Fermentation Industries and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The study aims to explore the effects of butyric acid glycerides on the growth performance and diarrhea rate of weaned piglets, and to conduct a systematic evaluation using meta-analysis methods. Through computer searches of Wanfang, CNKI, VIP, Pub Med, and Web of Science databases, literature on the effects of butyric acid glycerides on the growth performance of weaned piglets was searched. Lit‐ erature was screened and extracted according to inclusion and exclusion criteria, and meta-analysis was conducted using Review Manager 5.4 software. A total of 838 samples were included in 12 studies. The results showed that the average daily weight gain of the tributyrin group was significantly higher than that of the blank group (P<0.000 1, SMD=1.58, 95% CI: 0.80 to 2.36), the average daily feed intake of the tri‐ butyrin group was not significantly different from the blank group (P=0.30, SMD=-0.44, 95% CI: -1.28 to 0.40), and the feed to weight ratio of the tributyrin group was significantly lower than that of the blank group (P=0.000 2, SMD=-0.85, 95% CI: -1.29 to -0.40), The diarrhea rate in the tributyrin group was significantly lower than that in the blank group (P=0.000 3, SMD=-2.78, 95% CI: -4.27 to -1.28). The addition of tributyrin in feed can significantly increase the daily weight gain of weaned piglets, reduce the feed to weight ratio and diarrhea rate. [ABSTRACT FROM AUTHOR]

为拓宽三丁酸甘油酯的应用范围，以三丁酸甘油酯为芯材，抗性糊精-明胶-海藻酸钠（RGS）、抗性糊精-明胶-海藻酸钠-月桂酸单甘酯（RGSG）、抗性糊精-明胶-壳聚糖（RGC）、抗性糊精-明胶-壳聚糖-月桂酸单甘酯（RGCG）为壁材，采用喷雾干燥法制备4种微胶囊，对微胶囊包埋率及产率、粒径分布、基本理化性质、颜色、结构特征及外观形貌进行分析，探究不同壁材对三丁酸甘油酯微胶囊性质的影响。结果表明：RGSG微胶囊包埋率（91.05%）及产率（90.46%）较高；与RGC、RGS微胶囊相比，RGSG、RGCG微胶囊的水分活度、粒径分布、流动性、吸湿性、亮度均有一定的改善；红外光谱及扫描电镜结果表明三丁酸甘油酯被壁材有效包埋起来，其中RGSG、RGCG微胶囊形成了更强的氢键。综上，RGSG制备的微胶囊综合性质优于其他3种壁材。In order to broaden the application range of tributyrin, using tributyrin as the core material, and resistant dextrin-gelatin-sodium alginate(RGS), resistant dextrin-gelatin-sodium alginate-glycerol monolaurate(RGSG), resistant dextrin-gelatin-chitosan(RGC), resistant dextrin-gelatin-chitosan-glycerol monolaurate(RGCG) as wall materials, four kinds of microcapsules were prepared by spray drying method. Tributyrin microcapsules were evaluated with regard to embedding rate and yield, particle-size distribution, basic physicochemical properties, color, structural characteristics and appearance. The results showed that RGSG as the wall material had higher embedding rate (91.05%) and yield (90.46%). Compared with RGS and RGC microcapsules, RGSG and RGCG microcapsules had better water activity, particle-size distribution, fluidity, hygroscopicity and brightness. Fourier transform infrared spectroscopy and scanning electron microscope revealed that tributyrin were effectively encapsulated. RGSG，RGCG as the wall materials formed more intense hydrogen bonds. In conclusion, the comprehensive properties of tributyrin microcapsules prepared with RGSG as wall material were better than those of the other three kinds of wall materials.

为了明确酶法制备的环糊精-三丁酸甘油酯包合物(ECT)在动物体内的生物效能，为其在动物饲料中的应用提供理论指导，将36只3周龄雄性BALB/c小鼠随机分为6组，分别为对照组、三丁酸甘油酯组、酶法环糊精组、麦芽糊精-三丁酸甘油酯复合物组、硅基三丁酸甘油酯组、ECT组，饲养5周后测定小鼠体质量、血清生化指标、肝脏抗氧化指标、小肠绒毛高度及隐窝深度、结肠长度、结肠组织学损伤评分、结肠杯状细胞数量以及粪便中短链脂肪酸含量，探究ECT对小鼠生长性能、抗氧化功能和肠道健康的影响。结果表明：与对照组相比，ECT组日均增重增加88.37%，料重比降低45.01%，血清中三酰甘油含量降低38.88%，总抗氧化活力提高36.45%，结肠组织学损伤评分降低，结肠组织中杯状细胞数量增加23.44%，粪便中总短链脂肪酸和丁酸含量分别增加64%和196%。综上，ECT能够提高小鼠的生长性能和饲料利用率，提高肝脏抗氧化能力，还能够促进小肠发育，提高肠道中丁酸等短链脂肪酸含量，预防结肠炎症，有益于肠道健康，具备作为营养型饲料添加剂的应用潜力。 In order to clarify the biological effectiveness of enzymatic cyclodextrin synthesis-tributyrin inclusion complex (ECT) in animals and provide theoretical guidance for its application in animal feed, 36 3-week-old BALB/c male mice were randomly divided into 6 groups: control group, tributyrin group, enzymatic cyclodextrin group, maltodextrin-tributyrin complex group, silica-tributyrin group, and ECT group. After 5 weeks of feeding, the body weight, serum biochemical indexes, liver antioxidant indexes, villus height and crypt depth of small intestine, colon length, colonic histological injury score, colonic goblet cell number and short-chain fatty acid contents in faeces were measured to explore the effects of ECT on the growth performance, antioxidant function and intestinal health of mice. The results showed that compared with the control group, the ECT group increased the average daily weight gain by 88.37%, reduced the feed/gain by 45.01%, reduced the serum triglyceride content by 38.88%, increased the total antioxidant activity by 3645%, reduced the colonic histological injury score, and increased the number of goblet cells in colon tissue by 23.44%. Total short-chain fatty acids and butyric acid contents in faeces increased by 64% and 196%, respectively. In conclusion, ECT can improve the growth performance and feed utilization rate of mice, improve the antioxidant capacity of the liver, promote the development of the small intestine, increase the content of short-chain fatty acids such as butyric acid in the intestine, prevent colon inflammation, and benefit intestinal health. ECT has the application potential as a nutritional feed additive.

[Objectives] Perinatal ewes are often in a state of negative balance of multiple nutrients, especially energy negative balance, which has also attracted attention. The purpose of this experiment was to explore the effects of adding tributyrin to the perinatal Hu sheep diet with negative energy balance on rumen fermentation indexes and microbial diversity of lambs. [Methods] Twenty 50 days antepartum Hu sheeps with similar body condition and (45±5) kg body weight were randomly divided into control group (NEB, negative energy balance) and experimental group (TB, adding tributyrin 40 days before delivery to 42 days postpartum). After delivery, 5 lambs were randomly selected from each group, and the corresponding groups were L-NEB group and L-TB group. When the lambs reached 42 days old, they were slaughtered. The rumen contents were collected, the rumen fermentation indexes were measured, and the rumen microorganisms were analyzed by high-throughput sequencing technique. [Results] After adding tributyrin in perinatal Hu sheep, the content of acetic acid in the rumen contents of lambs in L-TB group significantly increased (P<0.05), and the content of propionic acid had an upward trend; the diversity of rumen microbial significantly decreased (P<0.05); the proportion of Firmicutes increased significantly (P<0.05), and the proportion of Cyanobacteria decreased significantly (P<0.05); at the genus level, the abundances of Succiniclasticum and Ruminococcaceae UCG014 in Firmicutes were significant improved (P<0.05). [Conclusions] Adding tributyrin to the diet of Hu sheep in perinatal period can improve the nutritional status of newborn lambs, create favorable conditions for the colonization of beneficial bacteria in rumen of lambs, and have a positive impact on the growth and development of lambs. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The experiment was to explore and optimize the synthesis, detection and microencapsulation process of tributyrin. In the experiment, relevant experiments were carried out in terms of synthetic material ratio, catalyst type, stirring method and speed, detecting the product by gas chromatography (GC), microencapsulating the product by thermal spray granulation. The results showed that the optimum experimental conditions was 1∶4 of molar ratio of glycerol to butyric acid, 0.1% of the amount of solid catalyst, and 800 r/min of the rotating speed with anchor stirring. The experiment indicates that the tributyrin produced by the optimized method is colorless and transparent, with a content of up to 95%, and the particles of the microcapsule powder are uniform and the embedding rate is high, which helps to expand the application range of the product. [ABSTRACT FROM AUTHOR]