Indian Oil Corporation Limited

Department of Biotechnology

Department of Biotechnology Ministry of Science & Technology

Ruchi Agrawal

Ravi Prakash Gupta

Ravindra Kumar

Alok Satlewal

Sankara Sri Venkata Ramakumar

Suresh Kumar Puri

Deepak Kumar Tuli

Deepak Saxena

Biswajit Basu

Anshu Shanker Mathur

The present disclosure relates to a process for producing levulinic acid from the technical lignin. The technical lignin is rich in lignin and ash and do not have any other use and usually incinerated as a waste management strategy. During the incineration process, the cellulose also gets burnt and wasted. In the present disclosure, there is provided an economical and environmentally friendly process to produce levulinic acid from the technical lignin by using a synergistic combination of catalysts for high yields and high titer with acid recycling in a cost-effective manner.

Method for producing levulinic acid

An integrated approach for utilizing waste products of 2G bio-refineries to fractionate the lignin of high purity. The present invention also provides a method of recycling of two waste products (2-G ethanol residue as the substrate (LRBR) and fusel oil/synthetic fusel oil (SFO) as one of the solvent) of the biorefineries in a beneficial manner to fractionate the lignin of high purity. The present method of separating high purity lignin comprises fractioning extractive-free lignin rich residue with a solvent, wherein the solvent is a mixture of SFO/Fusel oil and Formic acid. An optimized ratio of waste fusel oil and formic acid gave more than &#x3e;85% yields of high purity lignin.

Method to valorize 2G bioethanol waste streams

The present invention relates to a formulation to stabilize lignocellulolytic enzyme mixture. This invention in particular relates to a formulation composed of lignocellulolytic enzyme with critical dosages of molasses either with petrochemical waste or glycerol as an additive to improve enzyme stability in a synergistic manner.

Stable lignocellulolytic enzyme composition

The present invention relates to an additive or additive composition for improved production of fermentable sugars from lignocellulosic biomass during enzymatic hydrolysis. More particularly, the present invention discloses petrochemical waste as an additive or an additive composition containing one or more ethylene glycol oligomers and one or more metal ions which are useful for improved production of fermentable sugars from lignocellulosic biomass during enzymatic hydrolysis.

Method for improved production of fermentable sugars from lignocellulosic biomass using additive and enzyme

Growing community of inventors

Faridabad, India

Ruchi Agrawal