Towards food circular economy: hydrothermal treatment of mixed vegetable and fruit wastes to obtain fermentable sugars and bioactive compounds

Sánchez, Marta; Laca, Amanda; Laca, Adriana; Dı́az, Mario

doi:10.1007/s11356-022-22486-y

Cited by 10 publications

(9 citation statements)

References 76 publications

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“…The vegetable residues were then converted to nutraceuticals, such as colorants or flavorings, that promote general human well-being and control symptoms and malignant processes. In another study, Sanchez et al [72] used a mixture of overripe whole fruits and vegetables to obtain fermentable bioactive compounds and sugars for the food industry. They applied the hydrothermal hydrolysis of the biomass technique to treat FW using various environmental conditions (temperature, time, biomass/water ratio, and pH values).…”

Section: Nutraceuticalsmentioning

confidence: 99%

Valorizing Fruit and Vegetable Waste: The Untapped Potential for Entrepreneurship in Sub-Saharan Africa—A Systematic Review

Okuthe

2024

Recycling

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Valorizing food waste (FW) in sub-Saharan Africa (SSA) can enhance the efficiency of limited resources, make healthy diets more affordable, and foster the creation of innovative enterprises. The vast quantities of FW from the agri-food chain significantly threaten food security. To address this issue and maximize potential environmental and socio-economic benefits, valorizing waste, a value-adding process for waste materials, has emerged as a sustainable and efficient strategy. Valorizing FW reduces greenhouse gas emissions, mitigates climate change, enhances resource efficiency, and improves planetary health. As a pivotal player in the transition toward the circular economy, this study investigates the potential of converting FW into value-added products, offering entrepreneurial opportunities for SSA’s unemployed youth. A systematic literature review is conducted to identify and filter relevant articles over five years by applying inclusion and exclusion criteria. A total of 33 articles were included for in-depth analysis to address the study’s aim. The findings highlight a range of value-added products derived from FW, including renewable energy sources, nutraceuticals, and heavy metal adsorbents. These products present promising entrepreneurial prospects within SSA. Nonetheless, overcoming barriers to FW valorization adoption is crucial for fully realizing its potential as a profitable business avenue.

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Section: Nutraceuticalsmentioning

confidence: 99%

Valorizing Fruit and Vegetable Waste: The Untapped Potential for Entrepreneurship in Sub-Saharan Africa—A Systematic Review

Okuthe

2024

Recycling

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“…Research on bioactive compounds has received great interest due to the essential role of these substances in reducing the risk of several diseases. Specifically, it has been reported that the intake of specific bioactive compounds is related to reducing the risk of cancer, degenerative diseases or cardiovascular disorders [65].…”

Section: Bioactive Compoundsmentioning

confidence: 99%

“…Conventional extraction methods conducted to recover phenolic compounds from plant-based matrices are normally time-consuming and require a high consumption of solvents and energy. In addition, they can lead to the oxidation and denaturation of polyphenols [2,28,65,81,82]. Therefore, in recent years, environmentally friendly extraction methods, which are capable of recovering high amounts of bioactive compounds with short extraction times and low solvent consumption, are gaining interest [17].…”

Section: Antioxidant Compoundsmentioning

confidence: 99%

Cocoa Bean Shell: A By-Product with High Potential for Nutritional and Biotechnological Applications

Sánchez

Laca

et al. 2023

Antioxidants

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Cocoa bean shell (CBS) is one of the main solid wastes derived from the chocolate industry. This residual biomass could be an interesting source of nutrients and bioactive compounds due to its high content in dietary fibres, polyphenols and methylxanthines. Specifically, CBS can be employed as a raw material for the recovery of, for example, antioxidants, antivirals and/or antimicrobials. Additionally, it can be used as a substrate to obtain biofuels (bioethanol or biomethane), as an additive in food processing, as an adsorbent and, even, as a corrosion-inhibiting agent. Together with the research on obtaining and characterising different compounds of interest from CBS, some works have focused on the employment of novel sustainable extraction methods and others on the possible use of the whole CBS or some derived products. This review provides insight into the different alternatives of CBS valorisation, including the most recent innovations, trends and challenges for the biotechnological application of this interesting and underused by-product.

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“…The total sugar content present in the 2 mL of the apple pomace sugar solution was quantified by UV−vis spectrophotometry. 35 First, a standard calibration curve was prepared by recording the absorption spectrum of different fructose concentrations (10−50 mg/mL) in distilled water at a wavelength of 283 nm. The calibration curve was obtained by plotting the observed absorbance values against fructose concentrations.…”

Section: Conversion Of Apple Pomace To 5-hmfmentioning

confidence: 99%

“…The resultant sugar solution was stored at −20 °C and used for catalysis. The total sugar content present in the 2 mL of the apple pomace sugar solution was quantified by UV–vis spectrophotometry . First, a standard calibration curve was prepared by recording the absorption spectrum of different fructose concentrations (10–50 mg/mL) in distilled water at a wavelength of 283 nm.…”

Section: Experimental Sectionmentioning

confidence: 99%

Nanopalladium-Decorated Sn-Na MOF Catalyst for Upgrading Biosugars to 5-Hydroxymethylfurfural in an Aqueous Medium

Rohilla

Thakur

Kumar

et al. 2023

ACS Appl. Nano Mater.

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The present study explores the solvothermal synthesis of the Sn-Na MOF composed of stannatranone cages interconnected through Na bridges. The MOF was used as a catalytic support to hold palladium nanoparticles. The nanopalladium-decorated Sn-Na MOF (Pd NPs/Sn-Na MOF) was characterized by FTIR, PXRD, SEM, TEM, NH3-TPD, and XPS analysis. The resulting composite Pd NPs/Sn-Na MOF demonstrated catalytic activity for the conversion of fructose to 5-hydroxymethylfurfural (5-HMF), which is a promising material for the production of various value-added chemicals. The catalyst shows rapid conversion (in 3 h), recyclability (up to 5 cycles), and a high yield of 5-HMF (92.4%) in an aqueous medium without the formation of the side product levullinic acid. Further, the successful conversion of stale and rotten apples to 5-HMF using the developed protocol justifies the scope to convert agrowaste sugars to value-added products with appreciable yield.

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Towards food circular economy: hydrothermal treatment of mixed vegetable and fruit wastes to obtain fermentable sugars and bioactive compounds

Cited by 10 publications

References 76 publications

Valorizing Fruit and Vegetable Waste: The Untapped Potential for Entrepreneurship in Sub-Saharan Africa—A Systematic Review

Valorizing Fruit and Vegetable Waste: The Untapped Potential for Entrepreneurship in Sub-Saharan Africa—A Systematic Review

Cocoa Bean Shell: A By-Product with High Potential for Nutritional and Biotechnological Applications

Nanopalladium-Decorated Sn-Na MOF Catalyst for Upgrading Biosugars to 5-Hydroxymethylfurfural in an Aqueous Medium

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