Effects of drying method on bioactive compounds contents,rumen fermentation parameters and in vitro methane output of waste dried País grape(Vitis vinifera L.)marc  

作　　者：Sandra Tatiana Suescun-Ospina Jorge Avila-Stagno Nelson Vera-Aguilera Rita Astudillo-Neira Igor Trujillo-Mayol Julio Alarcon-Enos 

机构地区：[1]Facultad de Ciencias Veterinarias,Universidad de Concepcion,Chillan,Chile [2]Escuela de Ciencias Animales,Universidad de los Llanos,Villavicencio,Meta,Colombia [3]Centro de Estudios Agrícolas y Alimentarios,Programa de Ciencia y Tecnología de Alimentos,Universidad del Valle de Guatemala,Guatemala Ciudad,Guatemala [4]Departamento de Ciencias Basicas,Grupo de Investigacion en Química y Biotecnología de Productos Naturales Bioactivos,Facultad de Ciencias,Universidad del Bio Bio,Chillan,Chile

出　　处：《Food Bioscience》2023年第1期1324-1330,共7页食品生物科学（英文）

基　　金：financed by the General Research Direction of Uni-versidad de los Llanos(Colombia);Laboratorio de Nutricion Animal y Sistemas Ganaderos(Universidad de Concepcion);Research Direc-tion,University of Bio Bio,Chillan,CHILE:DIUBB#132209 GI/C.

摘　　要：Grape marc(GM)from País winery is an abundant resource with potential use in animal feed in Chile,but information on its chemical composition,bioactive compounds and enteric methane(CH4)emissions is not reported.Drying conditions could change the chemical composition and bioactive compounds of País GM,and affect CH4 output.Thus,the objectives of this study were to assess the effects of drying conditions on the chemical composition and bioactive compounds of País GM,and rumen fermentation parameters and CH4 output.The first experiment evaluated the effects of three drying conditions(freeze-drying,and oven drying at 40℃/72-h and 60℃/48-h)on the contents of bioactive compounds,antioxidant capacity and chemical composition of País GM.The second experiment evaluated and compared rumen fermentation parameters and CH4 output of dried País GM.Freeze-dried País GM had the highest concentrations of phenolic compounds(p=0.001),but oven-dried País GM(60℃/48-h)showed the highest content of proanthocyanidins(p=0.043).Ash(p=0.003),ether extract(p=0.042)and non-fiber carbohydrate(p=0.033)contents were higher in oven-dried País GM,as opposed to neutral detergent fiber or acid detergent fiber.Oven drying GM at 60℃/48-h reduced dry matter disappearance(p<0.001),and gas production(p=0.001),but also showed lower CH_(4)production(p<0.001)and yield(p=0.001)as compared to freeze dried GM.Results suggest that oven-drying is useful to conserve GM chemical value,extend its’shelf-life and allows use of País GM as ruminant feed with potential positive environmental effects on enteric CH4 emissions but further in vitro and in vivo studies with GM as a dietary ingredient are required.

关 键 词：Wine by-products Bioactive compounds Mitigation LIVESTOCK 

分 类 号：TS201[轻工技术与工程—食品科学]