Cost-effective valorization of cassava fibrous waste into enantiomerically pure D-lactic acid: Process engineering and kinetic modelling approach

Gali, Kiran Kumar; Tadi, Subbi Rami Reddy; E.V.R., Arun; Mohan, Naresh; Swaminathan, Nivedhitha; Katiyar, Vimal; Sivaprakasam, Senthilkumar

doi:10.1016/j.eti.2021.101519

Cited by 6 publications

(2 citation statements)

References 42 publications

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“…Lactic acid is a monomer with wide application in the chemical, pharmaceutical, agricultural, textile and plastic industries [51]. It is an important chemical product of commercial interest that can be obtained microbially in the fermentation process [52,53]. Therefore, the recovery of cassava waste for the production of lactic acid is of great importance.…”

Section: Lactic Acidmentioning

confidence: 99%

Integrated Biorefinery and Life Cycle Assessment of Cassava Processing Residue–From Production to Sustainable Evaluation

Andrade

Felisardo

Cruz

et al. 2022

Plants

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Commonly known as a subsistence culture, cassava came to be considered a commodity and key to adding value. However, this tuber’s processing for starch and flour production is responsible for generating a large amount of waste that causes serious environmental problems. This biomass of varied biochemical composition has excellent potential for producing fuels (biogas, bioethanol, butanol, biohydrogen) and non-energetic products (succinic acid, glucose syrup, lactic acid) via biorefinery. However, there are environmental challenges, leading to uncertainties related to the sustainability of biorefineries. Thus, the provision of information generated in life cycle assessment (LCA) can help reduce bottlenecks found in the productive stages, making production more competitive. Within that, this review concentrates information on the production of value-added products, the environmental impact generated, and the sustainability of biorefineries.

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Section: Lactic Acidmentioning

confidence: 99%

Integrated Biorefinery and Life Cycle Assessment of Cassava Processing Residue–From Production to Sustainable Evaluation

Andrade

Felisardo

Cruz

et al. 2022

Plants

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“…Accordingly, it immediately spoils and emits an unpleasant and strong scent. Moreover, the use of cassava pulp has been proposed in various applications, such as animal feeds ( Diarra and Devi, 2015 ; Dagaew et al, 2022 ; Pongsub et al, 2022 ), bioethanol ( Rattanachomsri et al, 2009 ; Siriwong et al, 2019 ), succinic acid ( Sawisit et al, 2015 ), lactic acid ( Thongchul et al, 2010 ; Gali et al, 2021 ), fertilizer ( Phun-iam et al, 2018 ; Hasanudin et al, 2019 ), biogas ( Lerdlattaporn et al, 2021 ), biodegradable polymer ( Hierro-Iglesias et al, 2022 ) and biocomposites ( Nguyen et al, 2020 ; Nithikarnjanatharn and Samsalee, 2022 ). Clearly, high value-added products can be created from leftover cassava wastes generated by the cassava industry.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted cassava pulp hydrolysis as food waste biorefinery for biodegradable polyhydroxybutyrate production

Prasertsilp

Pattaragulwanit

Kim

et al. 2023

Front. Bioeng. Biotechnol.

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Cassava pulp is one of the most abundant agricultural residues that can cause serious disposal problems. This study aimed to apply a biorefinery approach by examining the feasibility of microwave-assisted cassava pulp hydrolysis to attain sustainable management and efficient use of natural resources. Four factors, namely, the liquid-to-solid ratio (20 mL/g, 10 mL/g, 7.5 mL/g, and 5 mL/g), types of acids (H2SO4 and H3PO4), watt power (600 W, 700 W, and 800 W) and time (3, 5 and 8 min), were carefully investigated. The highest fermentable sugar content of 88.1 g/L ± 0.7 g/L (0.88 g fermentable sugars/g dry cassava pulp) was achieved when 20 mL/g cassava pulp was hydrolyzed with 2.5% (v/v) H2SO4 under microwave irradiation at 800 W for 8 min. Glucose was a major product (82.0 g/L ± 5.2 g/L). The inhibitor concentration was 5.17 g/L ± 0.01 g/L, and the levulinic acid concentration was 5.15 g/L ± 0.01 g/L. The results indicated that the liquid-to-solid ratio, diluted acid concentration, irradiation watt power and time were important factors in producing fermentable sugars from acid hydrolysis under microwave irradiation. The crude hydrolysate was used for PHB production by Cupriavidus necator strain A-04. The hydrolysate to nutrients ratio of 30:70 (v/v) yielded a cell dry weight of 7.5 g/L ± 0.1 g/L containing PHB content of 66.8% ± 0.3% (w/w), resulting in a yield YP/S (g-PHB/g-SPHB) of 0.35 g/g. This study demonstrated that the microwave-assisted cassava pulp hydrolysate developed in this study provided a high amount of glucose (88.1% conversion) and resulted in a low concentration of inhibitors without xylose; this was successfully achieved without pregelatinization, alkaline pretreatment or detoxification.

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Crop wastes/residue biorefinery

Dahunsi

2025

Biorefinery

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Cost-effective valorization of cassava fibrous waste into enantiomerically pure D-lactic acid: Process engineering and kinetic modelling approach

Cited by 6 publications

References 42 publications

Integrated Biorefinery and Life Cycle Assessment of Cassava Processing Residue–From Production to Sustainable Evaluation

Integrated Biorefinery and Life Cycle Assessment of Cassava Processing Residue–From Production to Sustainable Evaluation

Microwave-assisted cassava pulp hydrolysis as food waste biorefinery for biodegradable polyhydroxybutyrate production

Crop wastes/residue biorefinery

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