Details

Autor(en) / Beteiligte

• Spadoni Andreani, Eugenio
• Karboune, Salwa
• Liu, Lan

Titel

Extraction and characterization of cell wall polysaccharides from cranberry (Vaccinium macrocarpon var. Stevens) pomace

Ist Teil von

• Carbohydrate polymers, 2021-09, Vol.267, p.118212-118212, Article 118212

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Cranberries of Stevens variety, mainly used for juice production, were processed into pomace, from which alcohol insoluble solids (AIS) were obtained. The cell wall polysaccharides were sequentially extracted from AIS, and characterized in terms of monosaccharide profile, sugar linkage and molecular weight distribution. Pectic polysaccharides represented more than 90% of the carbohydrates contained in hot buffer (HA), chelating agents (CH) and diluted alkali (DA) extracts. HA extract contained homogalacturonan with 75% being methyl esterified, and pectic arabinan with traces of pectic galactan, type II arabinogalactan and 1,4-β-glucan. CH extract, recovered with the highest yield (11.0% w/w), was composed mainly of homogalacturonan. DA extract included homogalacturonan with 2% methyl esterification, abundant arabinan and galactans and traces of 1,4-β-glucan. Glucomannan, xylan and xyloglucan represented 66% of the carbohydrates present in the last concentrated alkali extract (CA), the rest being pectic arabinan and galactan. High molecular weight polysaccharides (>102 kDa) were identified in all extracts. •Structure of cranberry cell wall polysaccharides was elucidated for the first time.•High homogalacturonan pectin was identified in cranberry chelating agents extract.•Arabinan-branched pectin was prevalent in hot buffer and diluted alkali extracts.•Concentrated alkali cranberry extract contained xylan, xyloglucan and glucomannan.•Sequentially extracted polysaccharides can be used as food ingredients and sources of prebiotics.