&lt;i&gt;Parthenium hysterophorus&lt;/i&gt;:Low Cost Substrate for the Production of Polyhydroxyalkanoates

Sabapathy, Poorna Chandrika; Devaraj, Sabarinathan; Preethi, Kathirvel

doi:10.18520/cs/v112/i10/2106-2111

Cited by 9 publications

(1 citation statement)

References 15 publications

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“…High production costs, compared to the traditional petrol-based plastics, remain the major challenge for polyhydroxyalkanoates entry into the plastics market. The use of inexpensive carbon sources, such as waste products, and a highly productive fermentation process could help to overcome the production costs [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

High Cell Density Conversion of Hydrolysed Waste Cooking Oil Fatty Acids Into Medium Chain Length Polyhydroxyalkanoate Using Pseudomonas putida KT2440

Ruiz

Kenny

et al. 2019

Catalysts

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Waste cooking oil (WCO) is a major pollutant, primarily managed through incineration. The high cell density bioprocess developed here allows for better use of this valuable resource since it allows the conversion of WCO into biodegradable polymer polyhydroxyalkanoate (PHA). WCO was chemically hydrolysed to give rise to a mixture of fatty acids identical to the fatty acid composition of waste cooking oil. A feed strategy was developed to delay the stationary phase, and therefore achieve higher final biomass and biopolymer (PHA) productivity. In fed batch (pulse feeding) experiments Pseudomonas putida KT2440 achieved a PHA titre of 58 g/l (36.4% of CDW as PHA), a PHA volumetric productivity of 1.93 g/l/h, a cell density of 159.4 g/l, and a biomass yield of 0.76 g/g with hydrolysed waste cooking oil fatty acids (HWCOFA) as the sole substrate. This is up to 33-fold higher PHA productivity compared to previous reports using saponified palm oil. The polymer (PHA) was sticky and amorphous, most likely due to the long chain monomers acting as internal plasticisers. High cell density cultivation is essential for the majority of industrial processes, and this bioprocess represents an excellent basis for the industrial conversion of WCO into PHA.

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Section: Introductionmentioning

confidence: 99%

High Cell Density Conversion of Hydrolysed Waste Cooking Oil Fatty Acids Into Medium Chain Length Polyhydroxyalkanoate Using Pseudomonas putida KT2440

Ruiz

Kenny

et al. 2019

Catalysts

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Biopolymer and polymer precursor production by microorganisms: applications and future prospects

Saharan,

Kamal,

Badoni

et al. 2023

J of Chemical Tech & Biotech

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Polymer has been used in various industries over the past few decades due to its tremendous applications. Among these, polyhydroxyalkanoates (PHA) and polylactic acid (PLA), are easily biodegradable biopolymers derived from bacteria, including recombinant Escherichia coli, Alcaligenes eutrophus, Alcaligenes latus, Azotobacter vinelandii, methylotrophs, and Pseudomonas. Conventional petroleum‐derived polymers have become potentially harmful to the environment due to their complex degradation process. The non‐biodegradability of synthetic polymers has become a global issue of concern. There is an urgent need for a substitute to tackle the increasing environmental stress. Microorganisms are small factories for producing different types of polymers during their growth cycle. The various features like biodegradability, biocompatibility, non‐toxicity, and wide substrate spectrum make the microbial polymers highly reliable. Biopolymers such as alginate, cellulose, cyanophycin, levan, poly‐hydroxyalkanoates, xanthan, poly‐lactic acid, and poly‐γ‐glutamic acid can be obtained from different microorganisms like Aureobasdium pullulans, Acetobacter xylinum, Bacillus thermoamylovorans, Cupriavidusnecator. These are extensively used in various fields like food, medicine, wastewater treatment, biofuel production, packaging, and cosmetics. Despite being advantageous in several ways, the biopolymer market still faces several hurdles. This review mainly emphasizes the different types of biopolymers, production by microorganisms and various applications of these biopolymers in different fields. The main drawback limiting the development of these polymers is the high production cost and low efficiency of the microbial strains. Genetic recombination is an efficient technique to enhance the microbial yield and to expand the biopolymers market size.This article is protected by copyright. All rights reserved.

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Turning Wastes into Resources: Exploiting Microbial Potential for the Conversion of Food Wastes into Polyhydroxyalkanoates

Corrado

Vastano

Cascelli

et al. 2021

Bio-Valorization of Waste

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<i>Parthenium hysterophorus</i>:Low Cost Substrate for the Production of Polyhydroxyalkanoates

Cited by 9 publications

References 15 publications

High Cell Density Conversion of Hydrolysed Waste Cooking Oil Fatty Acids Into Medium Chain Length Polyhydroxyalkanoate Using Pseudomonas putida KT2440

High Cell Density Conversion of Hydrolysed Waste Cooking Oil Fatty Acids Into Medium Chain Length Polyhydroxyalkanoate Using Pseudomonas putida KT2440

Biopolymer and polymer precursor production by microorganisms: applications and future prospects

Turning Wastes into Resources: Exploiting Microbial Potential for the Conversion of Food Wastes into Polyhydroxyalkanoates

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