Potential of an Exploitation of Acid-Tolerant Antimicrobial Microorganisms Evolving Enzyme Systems for the Utilization of Dairy By-products and Lignocellulosic Biomass to Lactic Acid

Juodeikienė, Gražina; Žadeikė, Daiva; Bartkienė, Elena; Bartkevičs, Vadims; Dikiy, Alexander; Shumilina, Elena

doi:10.3389/fbioe.2016.00092

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…Nevertheless, amylolytic fungi have poor lactic acid productivity due to a poor reaction rate in limited mass transfer. Therefore, bio-based lactic acid is primarily produced through the anaerobic processing of carbohydrate substances via homolactic microorganisms, e.g., various modified strains of lactic acid-producing bacteria (Juodeikiene et al 2016). In comparison with aerobic processing, anaerobic fermentation could afford high yields even with less energy requirement.…”

Section: Bio-based Lactic Acid Biocatalystsmentioning

confidence: 99%

Towards sustainable production of bio-based lactic acid via a bio-based technical route: Recent developments and the use of palm kernel cakes in the bioconversion

Rahim

Luthfi

Abdul

et al. 2022

BioRes

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The continued reliance on non-renewable fossil resources has led to serious environmental issues. In light of these concerns, the transition from non-renewable sources to more sustainable ones have been explored, as exemplified by the production of bio-based lactic acid via lignocellulosic biomass bio-refinery process. Malaysia, the second-largest producer of palm oil in the world, generates abundant, cheap, and underutilized oil palm biomass in the form of palm kernel cakes. Comprised of 50% fermentable hexose sugars, palm kernel cakes have emerged as an interesting feedstock substitute in the production of bio-based fine chemicals, e.g., lactic acid. This paper focuses on current work based on selected literature published in the 21st century on the exploitation of palm kernel cakes as a novel feedstock in bio-refinery processes after addressing the current global demand and potential commodity applications of bio-based lactic acid. It then discusses current research on potential lactic acid-producing microorganisms, with particular attention to bacteria, and different pretreatment methods for carbohydrate recovery from palm kernel cakes. It also highlights the potential of oil palm biomass, especially palm kernel cakes, as a promising commodity that contributes to sugar platforms in value-added products, e.g., biofuel, bioenergy, ethanol, acids, and fine chemicals.

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Section: Bio-based Lactic Acid Biocatalystsmentioning

confidence: 99%

Towards sustainable production of bio-based lactic acid via a bio-based technical route: Recent developments and the use of palm kernel cakes in the bioconversion

Rahim

Luthfi

Abdul

et al. 2022

BioRes

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“…1 H NMR allows the simultaneous detection and quantification of a wide range of small organic compounds-metabolites. NMR spectroscopy was successfully used to analyze dairy WW composition and the products of lactic acid bacteria (LAB) metabolism such as lactic and acetic acid, ethanol and other bio-refinery relevant compounds [19,20]. Such data on the chemical composition of WW may be used to develop biorefinery strategies or to evaluate WW treatment efficiency.…”

mentioning

confidence: 99%

Application of NMR Spectroscopy and Conventional Analytical Methods for the Assessment of Wastewater from Food Industry

Shumilina

Johansen

Glasner

et al. 2018

Waste Biomass Valor

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Before wastewater (WW) can be emitted into the municipal treatments plants, its organic matter content has to be assessed and found to comply with legislations. The chemical oxygen demand (COD) and total organic carbon (TOC) are among the most commonly used methods for such analysis. However, volatile organic compounds (VOC) present in the WW might hinder a correct organic matter estimation using these conventional methods. In this study, nuclear magnetic resonance (NMR) was used to identify and quantify VOC in dairy WW. It was determined that the NMR, COD and TOC analyses complement each other providing a more accurate estimation of the organic matter content in WW. In addition, NMR provides data on the metabolic composition of the dairy WW. This information was used to assess the possibility to reutilize dairy WW for the production of high added value compounds.Keywords Dairy wastewaters · NMR · TOC · COD · Added value · Volatile organic compounds Abbreviations WW Wastewater COD Chemical oxygen demand COD Th Theoretical chemical oxygen demand TOC Total organic carbon TOC Th Theoretical total organic carbon DM Dry matter content VOC Volatile organic compounds NMR Nuclear magnetic resonance BOD Biochemical oxygen demand LAB Lactic acid bacteria Statement of NoveltyEuropean and international legislations require food industry wastewater (WW) to be precleaned and have a low number of organic compounds before being emitted in the municipal treatment plants. The commonly used methods to determine the organic matter are COD and TOC. These two methods, however, may give skewed results as they do not account for volatile organic compounds (VOC) present in the samples. This research was undertaken to find out whether using NMR as addition to the conventional methods could give more reliable results. It was determined that NMR can be used as a quick and objective analysis to detect VOC in WW. In addition, using NMR it is possible to detect added value compounds present in WW. We suggest using NMR as a tool to assess the potential of WW reuse in food industries and to finetune the development of new bio-refineries.

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Biotechnological enhancement of lactic acid conversion from pretreated palm kernel cake hydrolysate by Actinobacillus succinogenes 130Z

Rahim

Luthfi

Bukhari

et al. 2023

Sci Rep

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The aim of this study was to establish an improved pretreatment and fermentation method i.e. immobilized cells for high recovery of fermentable sugars from palm kernel cake (PKC) and its effects on fermentability performance by Actinobacillus succinogenes 130Z in the conversion of the fermentable sugar to lactic acid. The effects of oxalic acid concentrations (1–6% w/v) and residence times (1–5 h) on the sugar recovery were initially investigated and it was found that the highest mannose concentration was 25.1 g/L at the optimum hydrolysis conditions of 4 h and 3% (w/v) oxalic acid. The subsequent enzymatic saccharification of the pretreated PKC afforded the highest enzymatic digestibility with the recovered sugars amounting to 25.18 g/L and 9.14 g/L of mannose and glucose, respectively. Subsequently, the fermentability performance of PKC hydrolysate was evaluated and compared in terms of cultivation phases (i.e. mono and dual-phases), carbonate loadings (i.e. magnesium and sodium carbonates), and types of sugars (i.e. glucose and mannose). The highest titer of 19.4 g/L lactic acid was obtained from the fermentation involving A. succinogenes 130Z in dual-phase cultivation supplemented with 30 g/L of magnesium carbonate. Lactic acid production was further enhanced by using immobilized cells with coconut shell-activated carbon (CSAC) of different sizes (A, B, C, and D) in the repeated batch cultivation of dual-phase fermentation producing 31.64 g/L of lactic acid. This work sheds light on the possibilities to enhance the utilization of PKC for lactic acid production via immobilized A. succinogenes 130Z.

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Potential of an Exploitation of Acid-Tolerant Antimicrobial Microorganisms Evolving Enzyme Systems for the Utilization of Dairy By-products and Lignocellulosic Biomass to Lactic Acid

Cited by 3 publications

References 21 publications

Towards sustainable production of bio-based lactic acid via a bio-based technical route: Recent developments and the use of palm kernel cakes in the bioconversion

Towards sustainable production of bio-based lactic acid via a bio-based technical route: Recent developments and the use of palm kernel cakes in the bioconversion

Application of NMR Spectroscopy and Conventional Analytical Methods for the Assessment of Wastewater from Food Industry

Biotechnological enhancement of lactic acid conversion from pretreated palm kernel cake hydrolysate by Actinobacillus succinogenes 130Z

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