Young culm of Dendrocalamus asper, Bambusa tuldoides and B. Vulgaris as source of hemicellulosic dietary fibers for the food industry

• Published in: Food research international Vol. 140; p. 109866
• Main Authors: Felisberto, Mária Herminia Ferrari, Beraldo, Antonio Ludovico, Sentone, Daniel Tourinho, Klosterhoff, Rafael R., Clerici, Maria Teresa Pedrosa Silva, Cordeiro, Lucimara Mach Côrtes
• Format: Journal Article
• Language: English
• Published: Canada Elsevier Ltd 01.02.2021
• Subjects: Arabinoxylan; Dietary fibres; Hemicellulose; Xylan; Young bamboo culm; Dietary fibres; Xylan; Hemicellulose; Young bamboo culm; Arabinoxylan
• ISSN: 0963-9969; 1873-7145
• DOI: 10.1016/j.foodres.2020.109866

[Display omitted] •Young bamboo culm fibrous fractions from Dendrocalamus asper, Bambusa tuldoides and B. vulgaris were characterized.•High amounts of total dietary fiber (79–89%) and low values of moisture, protein, lipid and ash were observed.•Neutral xylans and arabinoxylans were found in all studied bamboo species.•The young bamboo culm may be an alternative to supply dietary fibers to the food industry. Bamboo is a grass that has gained economic attention in the food industry as a source of dietary fiber, and the young bamboo culm may be an alternative to supply fibers to the market. The objective was to evaluate and characterize different portions (bottom, middle and top) of the young bamboo culm fibrous fractions from Dendrocalamus asper, Bambusa tuldoides and B. vulgaris regarding their color parameters, physicochemical composition and hemicellulosic polysaccharide characterization. Fibrous fractions were obtained after starch extraction and results showed high amounts of total dietary fiber (79–89%). The hemicellulosic polysaccharide contents (35.4–41.5%) demonstrated great potential for commercial extraction and so, we extracted them with alkali and fractionated regarding their solubility in cold-water. Insoluble polysaccharides (KP fractions) were obtained in higher yields (from 21.2% to 38.5%) than the soluble ones (KS fractions, yields from 2.3% to 5.2%). Monosaccharide composition showed mainly xylose and arabinose, with some minor amounts of mannose and galactose in some fractions. In a detailed NMR analysis, the presence of neutral xylans and arabinoxylans could be observed in all studied bamboo species, which can be used in food products and also in the production of xylooligosaccharides (XOS), biomaterials and biofuels.