Characterization of cassava root peels for the enzymatic peeling process

Publication Type

Poster

Authors

Barati, Z; Latif, S; Müller, J

Year of publication

2017

Published in

Books of Abstracts

Page (from - to)

54

Conference name

Innovations in Food Science & Technology

Conference location

Munich, Germany

Conference date

10-12 May, 2017

Keywords

cassava peel, characterization, enzymatic peeling

Peeling is one of the most crucial part in cassava processing. Hand peeling is the traditional method, and mechanical peeling is often common within a small-scale industry. However, hand peeling is slow and labour intensive while mechanical peeling causes too much loss. Therefore, to improve the existing peeling process, applying innovative enzymatic peeling is intriguing. In order to select suitable enzymes for the peeling process the composition of cassava peels is inevitable.

In this study, cassava peels imported from Tanzania and the peels from the cassava roots bought from the local market in Stuttgart were used. The crude fibre of the inner and outer peels of the local cassava roots was 6.7% and 54.5%, respectively. Moreover, the crude fibre of whole peels from Tanzania was 13.2%. Highest hemicellulose (30.4%) content was observed in the inner peels followed by the whole peels (15.9%) and the outer peels (1.7%). The cellulose content of the inner, outer and whole peels were 10.1%, 12.5% and 13.8%. Furthermore, highest lignin content was found in the outer peels (61.6%) followed by the whole peels (10.0%) and the inner peels (5.0%). 

Additionally, the glucose, saccharose, mannose and starch contents of the whole peels were 1.2%, 1.0%, 0.4% and 13.6%, respectively. The glucose, saccharose, mannose contents of the inner peels were 1.7%, 1.5% and 0.5%, respectively. Regarding the outer peels, the glucose and saccharose contents were found to be 0.6% and 0.3%, respectively.

Based on the composition of the cassava root peels, we decided to use enzymes with hemicellulase and cellulase activity for enzymatic peeling process.