Optimization of the Composition of a Novel Bioactive Silage Produced by Mixing of Ground Maize Grains with Olive Mill Waste Waters, Grape Pomace and Feta Cheese Whey

AgriEngineering

Anastasios Tsinas¹  Athina Tzora¹  Eleftherios Bonos²  Ioannis Skoufos²  Chrysanthi Mitsagga³  Ioannis Giavasis³  Konstantinos Petrotos⁴  Chryssoula Papaioannou⁴  Stylianos Kokkas⁴  Paschalis Gkoutsidis⁴ 

[1] Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, School of Agriculture, University of Ioannina, 47100 Arta, Greece;Laboratory of Animal Science, Nutrition and Biotechnology, Department of Agriculture, School of Agriculture, University of Ioannina, 47100 Arta, Greece;Laboratory of Biotechnology and Applied Microbiology, Department of Food Science and Nutrition, School of Agricultural Sciences, University of Thessaly, End of N. Temponera Str., 43100 Κarditsa, Greece;Laboratory of Food and Biosystems Engineering, Department of Agrotechnology, School of Agricultural Sciences, Geopolis, University of Thessaly, 41500 Larisa, Greece;

关键词: bioactive silage;    composition;    optimization;    maize;    olive mill waste waters;    grape pomace;   

DOI  :  10.3390/agriengineering3040055

来源: DOAJ

【 摘 要 】

In this work, the production of a novel and sustainable silage was realized and optimized. Three agro-industrial wastes produced in bulk: olive mill wastewater (OMWW), grape pomace (GP) and de-proteinized feta cheese whey (DFCW) were mixed with coarsely ground maize grains, and the mixture was inoculated with commercial lactic bacteria starter culture and fermented for 30 days under anaerobic conditions to obtain silage. Sixty-seven recipes with varying compositions of the three agro-wastes were ensilaged, and four silage quality indices: pH value, % acidity as lactic acid, total lactobacillus count (cfu/g) and total yeast and mold count (cfu/g) were monitored throughout the ensilage process, and the obtained data were used to perform multicriteria optimization of the silage composition. The optimization target was to simultaneously maximize the pH drop, % total acidity as lactic acid and lactobacillus count while minimizing the count of undesirable yeasts and molds. Following this optimization strategy, it was found that the best composition of the mixture of all three tested agro-industrial wastes to obtain a high-quality silage was the one containing: 20% w/w GP, 60% w/w OMWW and 20% w/w feta cheese whey. Finally, the produced silage was tested in broilers’ nutrition and by 10% w/w inclusion in the feed, which led to the production of high added-value bioactive meat rich in ω-3 fatty acids and with high antioxidant capacity.

【 授权许可】

Unknown