Study on Chemical Compositions of Manihot Esculenta Crantz(M. utilissima Pohl)Stalks

Abstract:

The chemical compositions of Manihot esculenta crantz(M. utilissima Pohl)stalks were investigated, the contents of phenolic hydroxyl group and UV spectra of lignin were determined by ultraviolet-visible spectrophotometer. The result showed that the chemical compositions of Manihot esculenta crantz(M. utilissima Pohl)stalks were as follows: ashes 4.97%, cold water extraction 12.04%, hot water extraction 12.57%, 1% sodium hydroxide solution extraction 34.16%, benzene-alcohol solution extraction 4.20%, nitric acid-alcohol cellulose 35.86%, holo-cellulose 72.62%, pentosan 19.20%, acid-soluble lignin 2.51%, acid-insoluble lignin 26.10%, organic solvent-soluble lignin 1.07%, pectin content is 0.02%; it can be used as a non-wood renewable source of natural products.Phenolic hydroxyl content of organic solvent-soluble lignin and acid-insoluble lignin are 1.245 mmol·g^-1 and 0.261mmol·g^-1 respectively; the maximum absorption wavelength of organic solvent-soluble lignin and acid-soluble lignin in the UV region is near to 205 nm and 280 nm, but shifts to long wavelength or short wavelength with the nature of the different solvents.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 394-398
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.394
• Online since: May 2011
• Authors: Cong Jin Chen, Yue Li, Qiu Ming Su, Li Juan Qu, Dong Chen
• Keywords: Chemical Compositions, Manihot Esculenta Crantz (M. ultissima Pohl), NTZ (M. utilissima Pohl), Stalks

References

[1] Y.W. Lu. Guangxi Tropical Agriculture,(2009),p.49. In Chinese

[2] H.Y. Li, X.L. Luo,Y,S. Liu and Fan Mo. Guangxi Agricultural Sciences, Vol.40(2009), p.705. In Chinese

[3] W.Y. Luo, H.L. Wang, L. Chen, Y.H. Fang, H.L. Zhou. Guangdong Chemical Industry, Vol.35(2008), p.3.In Chinese

[4] D.S. Huang, Z. Chang, J.K. Liu. South China University of Technology (Natural Science), Vol.28(2000), p.95. In Chinese

[5] L.J. Bo, C. Qing. Chemistry and Industry of Forest Products, Vol.28 (2008), P.66. In Chinese

[6] Y.R. Lai, Z. Zhang. China Pulp and Paper, Vol.22 (2007), p.54. In Chinese