Phavit Wongsirichot

The University of Manchester · Department of Chemical Engineering and Analytical Science

A rapeseed meal (RSM) valorization scheme was developed to utilize valuable fractions including phenolics (mainly sinapic acid), proteins and polysaccharides. This involved solvent extraction of phenolics, alkali extraction of proteins and fermentation of residual polysaccharide using Pseudomonas putida. For the first time, sustainable Deep eutecti...

Rapeseed meal (RSM) is an ideal candidate for biorefining due to its abundance, low cost, and valorizable factions, including protein and lignocellulose. High levels of residual nitrogen have hampered the application of RSM in fermentations where nitrogen-limitation is required, such as the production of polyhydroxyalkanoate (PHA) by Pseudomonas pu...

The replacement of traditional petroleum-based surfactants with renewable biosurfactants is a key part of the transition towards a circular economy. Sophorolipids are the most commercially adopted biosurfactant due to the existence of high productivity fermentation process, excellent surface and interfacial tension properties and because the main p...

Rapeseed meal (RSM) have high potential as an important alternative feedstock in industrial biotechnology. Recently, the pace of development for RSM processing and fermentation have increased significantly. A wide variety of pretreatment and hydrolysis methods have been developed for media production; including fungal pretreatment, enzymatic hydrol...

Valorization of unavoidable food supply chain waste via biotechnology would be beneficial to the implementation of circular economics and may help increase market competitiveness of the final product via reduced feedstock costs. The suitability of post-milling wheat feed, potato processing scraps and sugar-beet pulps to act as the sole source of hy...

Inulin is a fructose-based polysaccharide that can be found in several plant species, from grass and onions to chicory roots; thus, it has the potential to be an excellent renewable source of fructose for several industrial applications. Among them, inulin hydrolysis can be coupled to a fermentation operation to produce polyhydroxybutyrate (PHB) us...

Rapeseed meal (RSM) hydrolysate is a potential low-cost feedstock for the production of polyhydroxyalkanoates (PHAs) by the archaea, Haloferax mediterranei. Acidic and enzymatic hydrolysis were carried out to compare effectiveness. Enzymatic hydrolysis is more effective than acidic hydrolysis for fermentation substrate leading to increased PHA prod...

Palm oil soap stock (POSS) was recycled from bio-waste to bio-fuel. Firstly, POSS was converted through acidification to be acidified POSS (APOSS) coupled with solvent extraction. APOSS with a high content of free fatty acids (FFAs) (90.94%) was obtained. Subsequently, the FFAs in APOSS were converted to biodiesel via esterification, catalyzed by i...

An integrated cleaner biocatalyst process was performed for biodiesel production from crude palm oil (CPO) and refined palm oil (RPO). It was evaluated on process efficiency in terms of high purity of biodiesel as well as by-products without purification, less wastewater, less time consuming, and a simple downstream process. A first saponification...

Expanding the use of tropical biomass wastes for nitrogen-limited fermentation was investigated, specifically, the production of medium chain length polyhydroxyalkanoates. Comprehensive central composite design was conducted to assess pH, temperature, biomass solid loading, cellulase loading and amylase loading and their impact on the hydrolysis of...

There are strong incentives for a transition of the current fossil fuel-based economy towards a bio-based one, stemming from the unsustainable nature of fossil fuels, climate change and difficult disposal of non-biodegradable products. As a result, there is increasing interest in waste valorisation, especially of agricultural waste, as this could p...

Rapeseed meal (RSM) is a candidate for biopolymer production due to its abundance, low cost and potential integration with other rapeseed-derived products. However, existing studies pursuing such schemes are limited. The feasibility of different strategies for RSM valorization via protein extraction and polyhydroxyalkanoate production were evaluate...

In this study the technical feasibility of using cider by-products as a substrate for the production of medium chain length polyhydroxyalkanoates (mcl-PHAs) by Pseudomonas putida KT2440 is demonstrated. The untreated apple pomace was found to be composed of two main residual sugars, glucose and fructose, making it a promising cheap growth substrate...