Circular economy has received significant attention for considering both agro-industrial sustainability and socioeconomic concerns, seeking for innovative solutions for waste disposal. The agri-food sector stands out for its production of by-products, many of which are used as animal feed. Grapes are one of the most cultivated fruit crops globally, with approximately 67 million tons produced annually. These sectors generate up to 20% waste biomass in the form of grape skin, seeds, stems, and residual pulp, known as grape pomace. The potential benefits of grape by-products (GP) provided by bioactive compounds deserve exploration when considering their addition in formulations. Moreover, they seem to potentially reduce enteric methane when fed to ruminants. The aim of this study was to analyse seven grape by-products (GP1 to GP7) to determine their chemical composition, polyphenolic content, as well as flavonoid and anthocyanin profiles. All GP showed an excellent content of CP (18-23%) and EE content, mostly in GP2 (12.11 %) as seed part. Fibre content aligns with literature, with NDF ranging from 25.52 to 48.80 and ADF from 27.80 to 32.19 (DM basis). The analysis reveal that GPs possess rich polyphenolic content (2.90-17.72 mg/g GAE) sequenced as GP7>GP6>GP5>GP4>GP3>GP2>GP1 and anthocyanin (278-2810 mg/kg) sequenced as GP1 >GP3>GP5>GP4>GP7>GP6>GP2. These characteristics alongside nutritional value suggest their potential as valuable supplements in animal feed aligning with the principles of circular economy and offering both environmental and economic benefits
Chemical characterization and phenolic content of winery and grape by-products as potential feed supplement / K. Simeonidis, G. Pastorelli, L. Pinotti, M. Ottoboni, E. Attard - In: 75th EAAP Annual Meeting, Abstract book[s.l] : European Federation of Animal Science, 2024 Sep. (( Intervento presentato al 75. convegno 75th EAAP Annual Meeting tenutosi a Florence nel 2024.
Chemical characterization and phenolic content of winery and grape by-products as potential feed supplement
K. SimeonidisPrimo
;G. PastorelliSecondo
;L. Pinotti;M. OttoboniPenultimo
;
2024
Abstract
Circular economy has received significant attention for considering both agro-industrial sustainability and socioeconomic concerns, seeking for innovative solutions for waste disposal. The agri-food sector stands out for its production of by-products, many of which are used as animal feed. Grapes are one of the most cultivated fruit crops globally, with approximately 67 million tons produced annually. These sectors generate up to 20% waste biomass in the form of grape skin, seeds, stems, and residual pulp, known as grape pomace. The potential benefits of grape by-products (GP) provided by bioactive compounds deserve exploration when considering their addition in formulations. Moreover, they seem to potentially reduce enteric methane when fed to ruminants. The aim of this study was to analyse seven grape by-products (GP1 to GP7) to determine their chemical composition, polyphenolic content, as well as flavonoid and anthocyanin profiles. All GP showed an excellent content of CP (18-23%) and EE content, mostly in GP2 (12.11 %) as seed part. Fibre content aligns with literature, with NDF ranging from 25.52 to 48.80 and ADF from 27.80 to 32.19 (DM basis). The analysis reveal that GPs possess rich polyphenolic content (2.90-17.72 mg/g GAE) sequenced as GP7>GP6>GP5>GP4>GP3>GP2>GP1 and anthocyanin (278-2810 mg/kg) sequenced as GP1 >GP3>GP5>GP4>GP7>GP6>GP2. These characteristics alongside nutritional value suggest their potential as valuable supplements in animal feed aligning with the principles of circular economy and offering both environmental and economic benefitsFile | Dimensione | Formato | |
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