Volume: 41 Issue: 2
Valorization of Cornmint (Mentha arvensis) distilled waste
Year: 2019, Page: 50-57, Doi: https://doi.org/10.62029/jmaps.v41i2.Kumar
Received: Oct. 16, 2019 Accepted: Dec. 4, 2019 Published: Dec. 31, 2019
Natural l-menthol is a flavour and fragrance bearing compound, obtained from the essential oil of Cornmint or the mentholmint (Mentha arvensis). The valuable essential oil is obtained by hydrodistillation of green aerial part of the Metha Plant, leaving behind a distilled lignocellulosic biomass that is normally treated as waste. The volatile matter (73%), crystallinity and value addition (volatilization) of this biomass were estimated in this study. Cellulose (39%), hemicellulose (19%) and lignin (7%) were isolated using a laboratory fabricated 2 L double jacketed reactor. Isolated cellulose was enzymatically saccharified to glucose (610 mg/g) with 10 FPU/ g loading of Cellic CTec2 (114 FPU/ml) at 50oC for 48 h. Further, glucose was utilized for the production of levulinic acid (LA) in subcritical-ethanol condition using Lanthanum (III) trifluoromethanesulfonate hydrate as a catalyst. At 150oC and 15 bar pressure, the glucose was converted to LA (54%) with purity of 96% in 90 min. In addition, the distillation condensate (~800 ppm) was also collected for recovery of water soluble essential oil through adsorption using Amberlite XAD-4 resin. The resin was desorbed in ethanol and after solvent removal the essential was isolated. The yield of recovered essential oil was 0.77 g /L, with menthol as major compound (82.3%).
Keywords: Catalyst, Cellulose, Glucose, Isolation of bio-polymers, Levulinic acid ,Mentha arvensis Subcritical ethanol, Value addition
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© CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow-226015
Deepak Kumar, Prashant Kumar, Praveen Kumar Sharma, Ashween Deepak Nannaware, Chandan Singh Chanotiya, Priyabrat Mohapatra, Prasant Kumar Rout. 2019. Valorization of Cornmint (Mentha arvensis) distilled waste. J Med Aromat Plant Sci 41: 50-57.
