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Research Project: New Sustainable Processing Technologies to Produce Healthy, Value-Added Foods from Specialty Crops

Location: Healthy Processed Foods Research

Title: Vitamin D-fortified chitosan films from mushroom waste

Author
item Bilbao-sainz, Cristina
item Chiou, Bor-sen
item Williams, Tina
item Wood, Delilah - De
item Du, Wen-xian
item Sedej, Ivana
item Ban, Zhaojun - Volcani Center (ARO)
item Rodov, Victor - Volcani Center (ARO)
item Poverenov, Elena - Volcani Center (ARO)
item Vinokur, Yakov - Volcani Center (ARO)
item Mchugh, Tara

Submitted to: Carbohydrate Polymers
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/5/2017
Publication Date: 3/6/2017
Citation: Bilbao-Sainz, C., Chiou, B., Williams, T.G., Wood, D.F., Du, W., Sedej, I., Ban, Z., Rodov, V., Poverenov, E., Vinokur, Y., McHugh, T.H. 2017. Vitamin D-fortified chitosan films from mushroom waste. Carbohydrate Polymers. 167(2017):97-104. doi: 10.1016/j.carbpol.2017.03.010.

Interpretive Summary: During harvesting of mushrooms, their stalk bases are generated as a waste product. These bases comprise approximately 25% to 33% of the weight of fresh mushrooms and are normally used as low-economic value animal feed and compost. However, the stalk bases can be used to obtain chitosan and develop nutritionally fortified films by treating the mushroom stalk bases with UV-B light to increase vitamin D2 content.

Technical Abstract: Brown mushroom (Agaricus bisporus) stalk bases from mushroom waste were treated with UV-B light to rapidly increase vitamin D2 content. Chitin was also recovered from this waste and converted into chitosan by N-deacetylation. FTIR spectra showed that the mushroom chitosan were similar to chitosan from animal sources. Chitosan films were prepared using high molecular weight (HW), low molecular weight (LW) and fungal chitosan. UV-B treated mushroom particles were also incorporated into fungal chitosan films. The fungal chitosan films showed similar density, porosity and water vapor barrier properties to the LW and HW chitosan films. However, fungal chitosan films were more hydrophobic and less flexible than the LW and HW chitosan films. Addition of mushroom particles did not significantly affect mechanical or water barrier properties of the fungal chitosan films.