L-lactic acid production from multi-supply autohydrolyzed economically unexploited lignocellulosic biomass

Pontes, Rita; Romaní, Aloia; Michelin, Michele; Domingues, Lucı́lia; Teixeira, J. A.

doi:10.1016/j.indcrop.2021.113775

Cited by 22 publications

(5 citation statements)

References 30 publications

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“…The obtained yield of lactic acid produced on consumed glucose was high and comparable with the current scientific literature. Recently, Pontes and co-workers [44] demonstrated the production of lactic acid by growing L. rhamnosus ATCC 7469 on an autohydrolyzed mixture of lignocellulosic biomass (forest ecosystems) in a simultaneous saccharification and fermentation (SSF) process with a yield of 0.97 g/g. Another recent work by Radosavljevic [45] demonstrated the ability of this strain to grow on Brewer's spent grain hydrolysate with an overall yield of 0.93 g/g.…”

Section: Discussionmentioning

confidence: 99%

Grape Stalk Valorization: An Efficient Re-Use of Lignocellulosic Biomass through Hydrolysis and Fermentation to Produce Lactic Acid from Lactobacillus rhamnosus IMC501

D’ambrosio,

Zaccariello,

Sadiq

et al. 2023

Fermentation

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Lactobacillus rhamnosus is a homofermentative probiotic strain that was previously demonstrated to grow on lignocellulosic-derived raw materials and to convert glucose into L-lactic acid (LA) with yields that vary between 0.38 and 0.97 g/g. Lactic acid is a key platform chemical, largely applied in different biotechnological fields (spanning from the pharmaceutical to the food sector) and also as a building block for the production of biodegradable polymers. In the present study, grape stalks were evaluated as sources of fermentable sugars for the growth of L. rhamnosus IMC501 and for the production of LA, since millions of hectoliters of wine are produced every year worldwide, generating a huge amount of waste. Although grape stalks are quite recalcitrant, the combination of a steam explosion pre-treatment with optimized two-step hydrolysis and commercial enzymes (Cellic-CTec2) allowed us to obtain a cellulose conversion efficiency of about 37% and to develop small-scale 2 L batch fermentation processes. Results successfully demonstrate that L. rhamnosus IMC501 can tolerate biomass-derived inhibitors and grow on grape stalk hydrolysate without the need for additional sources of nitrogen or other nutritional elements, and that the strain can convert all glucose present in the medium into LA, reaching the maximal theoretical yield.

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Section: Discussionmentioning

confidence: 99%

Grape Stalk Valorization: An Efficient Re-Use of Lignocellulosic Biomass through Hydrolysis and Fermentation to Produce Lactic Acid from Lactobacillus rhamnosus IMC501

D’ambrosio,

Zaccariello,

Sadiq

et al. 2023

Fermentation

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“…Use of simultaneous saccharification and fermentation (SSF) for bioethanol production reached a yield of 22.1 g bioethanol/100 g of rockrose residues and proved more efficient than separate enzymatic hydrolysis and fermentation (SHF) [116]. Mixtures of rockrose and other lignocellulosic biomass have been studied to produce solid biofuel, oligosaccharides, glucose, and L-lactic acid, aiming to contribute to the circular and sustainable bioeconomy concept [121,122].…”

Section: Added-value Products From Lignocellulosic Materialsmentioning

confidence: 99%

Cistus ladanifer as a Potential Feedstock for Biorefineries: A Review

et al. 2022

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Cistus ladanifer (rockrose) is a widespread shrub species in the Mediterranean region well known due to its production of labdanum gum, especially in the hot season. Its leaves and branches can be subjected to different extraction and distillation processes to produce various types of extracts. The natural extracts of C. ladanifer have several applications, especially in the perfumery and cosmetics sector. C. ladanifer extracts, in addition to presenting interesting odoriferous properties, are also known for their bioactive properties, such as antioxidant and antimicrobial. Use of this species in animal feed or phytostabilisation of mining areas has also been successfully applied. On the other hand, the lignin and polysaccharides that are the major fractions from Cistus residues can be relevant sources of high-value products in a biorefinery framework. Recently, it has been reported that the residues obtained from the essential oil industry can sustain production of significant amounts of other marketable products, namely phenolic compounds, oligomeric and monomeric sugars, lignin, and lactic acid. All these applications show the potential of C. ladanifer as a raw material to be fully valued in a biorefinery context, contributing to important revenues and generating an associated marketable biobased product portfolio.

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“…[ 20 ] Simultaneous saccharification and fermentation (SSF) and separate hydrolysis and fermentation (SHF) have been adopted in LA fermentation. [ 21 ] In SHF, the hydrolysis of HFW and the LA fermentation are conducted in two reactors with respective optimal conditions. [ 22 ] Throughout the SHF, the major deficiency has been the inhibition of hydrolytic enzymes by hydrolytic products, resulting in inadequate usable sugars hydrolyzed from polysaccharides.…”

Section: Introductionmentioning

confidence: 99%

Enhanced lactic acid production by Lactobacillus rhamnosus ATCC 7469 through simultaneous saccharification and fermentation from household food waste

Song

Liu

Yang

et al. 2023

CLEAN Soil Air Water

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A large amount of household food waste (HFW) is generated yearly and may negatively impact the environment and human health. The recovery of value‐added chemicals lactic acid (LA) from HFW through anaerobic treatment is a promising approach. However, it remains a challenge to increase the LA yield. In this paper, the LA production from HFW was enhanced by Lactobacillus rhamnosus ATCC 7469 through simultaneous saccharification and fermentation (SSF). The results showed that the mixed commercial enzymes of plant enzymes (E1), animal proteases (E2), and glucoamylase (E3) were more conducive to LA production than those used separately. Compared to the separate hydrolysis and fermentation (SHF), the LA production increased by 14% in the SSF, and the glucose concentration showed different change rules. Additionally, an average LA concentration of 47.7 g L–1 was obtained by repeated batch fermentation through SSF. However, the maximum LA concentration decreased with the fermentation ongoing. The trend of decreasing LA production could be improved by repeated batch fermentation with supplementary inoculation.

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L-lactic acid production from multi-supply autohydrolyzed economically unexploited lignocellulosic biomass

Cited by 22 publications

References 30 publications

Grape Stalk Valorization: An Efficient Re-Use of Lignocellulosic Biomass through Hydrolysis and Fermentation to Produce Lactic Acid from Lactobacillus rhamnosus IMC501

Grape Stalk Valorization: An Efficient Re-Use of Lignocellulosic Biomass through Hydrolysis and Fermentation to Produce Lactic Acid from Lactobacillus rhamnosus IMC501

Cistus ladanifer as a Potential Feedstock for Biorefineries: A Review

Enhanced lactic acid production by Lactobacillus rhamnosus ATCC 7469 through simultaneous saccharification and fermentation from household food waste

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