Recent trends in lactic acid biotechnology: A brief review on production to purification

Ghaffar, Tayyba; Irshad, Muhammad; Anwar, Zahid; Aqil, Tahir; Zulifqar, Zubia; Tariq, Asma; Kamran, Muhammad; Ehsan, Nudrat; Mehmood, Sajid

doi:10.1016/j.jrras.2014.03.002

Cited by 304 publications

(220 citation statements)

References 21 publications

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“…World sugar production was 180 million tonnes a year in 2014 [114]. If about 1.1-1.8 tonnes of sugar are required to produce 1 tonne of lactic acid [115,116] and the conversion of lactic acid to polylactic acid had a similar efficiency, a substantial fraction of edible plants would be required, which would have undesirable effects on food prices. However, fermentation from lignocellulosic biomass is also possible [115] and, due to its large mass, could be a reliable source of lactic acid.…”

Section: A8 Petrochemical Industrymentioning

confidence: 99%

Substitutability of Electricity and Renewable Materials for Fossil Fuels in a Post-Carbon Economy

Garciá‐Olivares

2015

Energies

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Abstract:A feasible way to avoid the risk of energy decline and combat climate change is to build a 100% renewable global energy mix. However, a globally electrified economy cannot grow much above 12 electric terawatts without putting pressure on the limits of finite mineral reserves. Here we analyze whether 12 TW of electricity and 1 TW of biomass (final) power will be able to fuel a future post-carbon economy that can provide similar services to those of a contemporary economy. Contrarily to some pessimistic expectations, this analysis shows that the principle economic processes can be replaced with sustainable alternatives based on electricity, charcoal, biogas and hydrogen. Furthermore, those services that cannot be replaced are not as crucial so as to cause a return to a pre-industrial society. Even so, land transport and aviation are at the limit of what is sustainable, outdoor work should be reorganized, metal primary production should be based on hydrogen reduction when possible, mineral production should be increasingly based on recycling, the petrochemical industry should shrink to a size of 40%-43% of the 2012 petrochemical sector, i.e., a size similar to that the sector had in [1985][1986], and agriculture may require organic farming methods to be sustainable.

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Section: A8 Petrochemical Industrymentioning

confidence: 99%

Substitutability of Electricity and Renewable Materials for Fossil Fuels in a Post-Carbon Economy

Garciá‐Olivares

2015

Energies

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“…Lactic acid is one of the most important organic acids which are being extensively used around the globe in a range of industrial and biotechnological applications [1]. It is widely used…”

Section: Introductionmentioning

confidence: 99%

Utilization of Date Juice for the Production of Lactic Acid by Streptococcus Thermophilus

Bouhadi¹,

Raho²,

Hariri³

et al. 2017

JABB

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The interest in the fermentative production of lactic acid has increased due to the prospects of environmental friendliness and of using renewable resources instead of petrochemicals. In this context, we have judged that is gainful to use the date juice which is with a low commercial value as a substrate for the production of lactic acid by Streptococcus thermophilus. Further, dates are rich in sugar ranging from 65% to 80% on dry weight basis mostly of inverted form (glucose and fructose), which can used as carbon source for the fermentation and the production of microbial biomass. The parameters optimization for lactic acid production by S. thermophilus grown on medium based on dates in order to improve yields is applied in this study. The results showed that the maximum of lactic acid production (36.9 g/l) is obtained after the enrichment of date juice with yeast extract (15%), Tween 80 (1g / l) MgSO 4 (0.5g/l), MnSO 4 (0.02g/l) and K 2 HPO 4 (1g/l). Keywords:Lactic acid production; Date juice; Streptococcus thermophilus in the food, cosmetic, pharmaceutical, and chemical industries and has received increased attention for use as a precursor for the biodegradable plastic polylactic acid, used in medical, industrial, and consumer products [2]. Lactic acid can be produced commercially by either chemical synthesis or microbial fermentation [3]. The production by fermentation process has attracted interest due to its advantages compared with chemical synthesis such as production of pure isomers (L(+) or D(-) lactic acid), use of renewable and low cost raw materials, low energy consumption and mild operation conditions [4]. There are many cheap and renewable raw materials in the form of starch (corn, wheat, potato, cassava, rice, sweet sorghum) and lignocelluloses (corn cobs, waste paper and woody materials) can be used as a substrate for fermentation of lactic acid [5]. Renewable resources do not give any net contribution of carbon dioxide to the atmosphere, as do the limited oil and fossil-fuel-based sources. Lactic acid can be biosynthesized by some bacteria and filamentous fungi [4].Algeria have a rich biodiversity of about 1900 date cultivars, but 30% of the production of dates is characterized by a low commercial quality [6]. Beside direct consumption of the whole dates, the fruits are traditionally used to prepare a wide range of product such as date juice concentrates (spread, syrup and liquid sugar), fermented date products (vinegar, organic acids) and date pastes for different uses e.g. bakery and confectionary. Date fruits are considered as a good source of sugars. It provides natural sugar in the form of glucose and fructose [7], which could be used as carbonaceous source of fermentation for the production of the lactic acid. The aim of the present study is the valorisation of the dates by production of its juice and used it as medium for the development of S. thermophillus and the production of lactic acid. Materials and Methods Plant materialThe date palm of Ghars cultivars grown in Bechar, S...

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“…The PLA provides both high melting point and crystallinity (Ghaffar et al, 2014). Lactic acid has two optical isomers, L-(+)-lactic acid and D-(−)-lactic acid (Narayanan et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the properties of PLA are adjusted accordingly to a ratio of the L-and D-PLA to form the co-polymer, in which D-form increases the melting point of the copolymer. Both the optically pure L-and D-lactic acid are efficiently achieved by microbial fermentation, thus presently 95 % of industrial lactic acid production is supported by microbial fermentation process (Ghaffar et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is important to select a raw material for industrial production of lactic acid with a number of characteristics such as the following (1) low cost, (2)rapid rate of fermentation, (3) lowest amount of contaminants, (4) high yields of lactic acid production, (5) least or no formation of by-products and (6) availability for whole year (Ghaffar et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Production and Detection of L-(+)-Lactic Acid Using Cassava as the Low Cost Fermentation Medium for the Synthesis of Biodegradable Polymers as Orthopedic Devices

Selvaraj¹,

Gunesekera²,

Gunathilaka³

et al. 2017

International Conference on Bioscience and Biotechnology

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Abstract:Polymers based on Lactic acid are of great importance to the healthcare industry because they decompose by hydrolysis in the human body in to nontoxic metabolites. Therefore, the objective of the current study was to produce L-(+)-Lactic acid using a low cost medium in order to synthesize a biodegradable polymer for healthcare industry. Powdered cassava was acid hydrolyzed using different concentration of HCl (0.5, 1, 1.5, 2, 2.

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Recent trends in lactic acid biotechnology: A brief review on production to purification

Cited by 304 publications

References 21 publications

Substitutability of Electricity and Renewable Materials for Fossil Fuels in a Post-Carbon Economy

Substitutability of Electricity and Renewable Materials for Fossil Fuels in a Post-Carbon Economy

Utilization of Date Juice for the Production of Lactic Acid by Streptococcus Thermophilus

Production and Detection of L-(+)-Lactic Acid Using Cassava as the Low Cost Fermentation Medium for the Synthesis of Biodegradable Polymers as Orthopedic Devices

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