4.4 Article

Characterization of Pilot Scale Processed Canadian Organic Cranberry (Vaccinium macrocarpon) and Blueberry (Vaccinium angustifolium) Juice Pressing Residues and Phenolic-Enriched Extractives

期刊

INTERNATIONAL JOURNAL OF FRUIT SCIENCE
卷 17, 期 2, 页码 202-232

出版社

TAYLOR & FRANCIS INC
DOI: 10.1080/15538362.2017.1285264

关键词

Organic; blueberry; cranberry; pomace; phenolic rich extractives

资金

  1. Agriculture and Agri-Food Canada under Canada's Organic Science Cluster II

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This work examined the processing yields, physico-chemical characteristics, and bioactive properties of Canadian organic cranberry and blueberry pomace and phenolic-enriched extractives. The ethanol extracts from each berry contained three to four times the soluble solids and sugar contents compared to the pomace. The lipid content of organic cranberry pomace (4.44%), cranberry ethanol extractives (3.86%), and blueberry ethanol extractives (4.44%) were significantly lower than the lipid content of the organic blueberry pomace (5.42%). The organic blueberry pomace showed higher protein content (8.41%) than organic cranberry pomace (5.76%); however, both organic cranberry and blueberry ethanol extracts showed similarly low protein contents. Significant differences were observed in the mineral and elemental contents of both pomaces and their extractives. Total phenolics, tartaric esters, flavonols, anthocyanins, and antioxidant activities were increased by two to three times in both organic cranberry and blueberry ethanol extracts compared to their respective pomaces. The major anthocyanins detected in organic blueberry pomace and ethanol extracts were peonidin 3-glucoside, malvidin 3-galactoside, malvidin 3-glucoside, and cyanidin 3-arabinoside. Peonidin 3-galactoside, cyanidin 3-galactoside, cyanidin 3-arabinoside, and peonidin 3-arabinside were the major anthocyanins in the organic cranberry and ethanol extacts. Results indicated that cranberry and blueberry pomace could be used to develop bioactives with antioxidant activity for potential health benefit and/or bioenergy production.

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