Physicochemical properties of fungal chitin nanopaper from shiitake (L. edodes), enoki (F. velutipes) and oyster mushrooms (P. ostreatus)

Mat Zin, Mizan Izzati and Jimat, Dzun Noraini and Wan Nawawi, Wan Mohd Fazli (2021) Physicochemical properties of fungal chitin nanopaper from shiitake (L. edodes), enoki (F. velutipes) and oyster mushrooms (P. ostreatus). Carbohydrate Polymer, 281. pp. 1-7. ISSN 0144-8617 E-ISSN 1879-1344

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Abstract

We evaluate the physiochemical properties of chitin nanopaper derived from three commonly cultivated mushrooms: shiitake (Lentinula edodes), oyster (Pleurotus ostreatus), and enoki (Flammulina velutipes). Mild alkaline extraction of fungal sample yields higher chitin recovery per dry weight (23–35%) compared to crustacean source (9.7%). Our extract readily defibrillates into 15–20 nm width fiber after 5 min blending in domestic kitchen blender, implying a simple and cost-effective nanofiber preparation. Enoki nanopaper was found to be more crystalline and possess slightly higher modulus and tensile strength (Eenoki = 2.83 GPa, σenoki = 51 MPa) compared to oyster and shiitake nanopaper (Eoyster = 2.28 GPa, σoyster = 45 MPa; Eshiitake = 2.59 GPa, σshitake = 43 MPa). However, oyster nanopaper exhibit higher toughness (1.92 MJ/m3) and larger strain at break (5.63%) because of their relatively smaller fibers promote a denser fibrous network that can sustain and absorb higher external loading.

Item Type:	Article (Journal)
Additional Information:	7777/96764
Uncontrolled Keywords:	Chitin-glucan, Nanofiber, Nanopaper, Mushrooms, Mechanical properties
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology > TP1080 Polymers, plastics and their manufacture T Technology > TP Chemical technology > TP155 Chemical engineering T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Wan Mohd Fazli Wan Nawawi
Date Deposited:	15 Feb 2022 15:32
Last Modified:	15 Feb 2022 15:32
URI:	http://irep.iium.edu.my/id/eprint/96764

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