Valorization of selected fruit and vegetable wastes as bioactive compounds: Opportunities and challenges

Jiménez-Moreno, Nerea; Esparza, Irene; Bimbela, Fernando; Gandı́a, Luis; Ancín‐Azpilicueta, Carmen

doi:10.1080/10643389.2019.1694819

Cited by 105 publications

(63 citation statements)

References 208 publications

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“…Starting from this evidence, the high antioxidant charge of Phlegrean mandarin seeds assumes a great commercial value for diverse purposes. Lyophilised or fresh seeds extracts might be used as food additives or included in pharmaceutical formulations as promising alternatives to the common preparations [53]. The current challenge is to improve the extraction techniques of bioactive compounds from vegetable wastes to preserve the properties of these molecules over time and obtain a full by-product valorisation.…”

Section: Discussionmentioning

confidence: 99%

Comparative Studies on Different Citrus Cultivars: A Revaluation of Waste Mandarin Components

et al. 2020

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Peel, pulp and seed extracts of three mandarin varieties, namely Phlegraean mandarin (Citrus reticulata), Kumquat (Citrus japonica), and Clementine (Citrus clementina) were compared and characterised in terms of photosynthetic pigment content, total polyphenols amount, antioxidant activity and vitamin C to assess the amount of functional compounds for each cultivar. The highest polyphenols content was found in the Phlegraean mandarin, especially in peel and seeds, whereas Kumquat exhibited the highest polyphenols amount in the pulp. The antioxidant activity was higher in the peel of Phlegraean mandarin and clementine compared to Kumquat, which showed the highest value in the pulp. The antioxidant activity peaked in the seeds of Phlegraean mandarin. The vitamin C in the Phlegraean mandarin was the highest in all parts of the fruit, especially in the seeds. Total chlorophyll content was comparable in the peel of different cultivars, in the pulp the highest amount was found in clementine, whereas kumquat seeds showed the greatest values. As regards total carotenoids, peel and pulp of clementine exhibited higher values than the other two cultivars, whereas the kumquat seeds were the richest in carotenoids. Among the analysed cultivars Phlegraean mandarin may be considered the most promising as a source of polyphenols and antioxidants, compared to the clementine and Kumquat, especially for the functional molecules found in the seeds. Moreover, regardless of cultivars this study also highlights important properties in the parts of the fruit generally considered wastes.

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Section: Discussionmentioning

confidence: 99%

Comparative Studies on Different Citrus Cultivars: A Revaluation of Waste Mandarin Components

et al. 2020

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“…Thus, the identifying of new sources of natural bioactive compounds with antioxidant potential represents a great challenge for food industry. Several studies have exposed the potential of vegetable waste as sources of natural bioactive compounds with antioxidant activity due to their high phenolic content [10,11].…”

Section: Introductionmentioning

confidence: 99%

Strategies to Improve the Thermo-Oxidative Stability of Sunflower Oil by Exploiting the Antioxidant Potential of Blueberries Processing Byproducts

et al. 2020

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This research was conducted in order to establish the effectiveness of two freeze-dried extracts obtained from blueberry processing byproducts resulting from juice manufacturing compared to butylated hydroxytoluene (BHT) in delaying the lipid oxidation of sunflower oil subjected to high-temperature convective heating at 180 °C up to 12 h under simulated frying conditions. The fruits were harvested from spontaneous flora of two regions of Romania, Arieseni (Alba County) and Paltinis (Sibiu County) and the blueberry byproducts extracts (BBE) were noted according to the origin place as ABBE and PBBE. The progress of lipid thermo-oxidation was investigated in terms of peroxide value (PV), p-anisidine value (p-AV), the response of TBA-malondialdehyde interactions assessed by thiobarbituric acid (TBA) method, the total oxidation (TOTOX) value and inhibition of oil oxidation (IO). The recorded data highlighted that BBE exhibit a high inhibitory response on lipid thermo-oxidation. The inhibitory effect was concentration-dependent, thus, the degree of lipid oxidation was in reverse related to the BBE dose. The exposure of the oil samples supplemented with 800 ppm BBE (ABBE, PBBE) to a high-temperature heating for 12 h led to a significant decrease of the assessed indices compared to additives-free sunflower oil sample as follows: PV (46%; 45%), p-AV (21%; 17%), TOTOX (27%; 24%), TBA value (25%; 11%). Regarding the impact of the origin on the potential of BBE to inhibit the lipid oxidative degradation, it was noted that ABBE derived from blueberries grown in a region with a milder climate with moderate precipitations and higher temperatures showed a stronger inhibitory effect on lipid thermo-oxidation than PBBE. A moderate level of 500 ppm BBE inhibited the lipid oxidation similar to 200 ppm BHT. The reported results reveal that BBE represent efficient natural antioxidants that could be successfully applied to improve the thermo-oxidative stability of sunflower oil used in various high-temperature food applications.

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“…In the case of plant-derived biosurfactants and other antimicrobial agents, the plant processing and extraction of the active compounds using conventional methods such as maceration, soxhlet extraction, hydro-distillation are not cost-effective for industrial-scale application. Such conventional techniques have various limitations including low extraction rate, use of hazardous and costly solvents, and high energy consumption [ 53 ]. Therefore, emerging extraction techniques such as microwave-assisted extraction, ultrasound-assisted extraction, supercritical fluid extraction, and pulsed electric field extraction are gaining interest.…”

Section: Economic Aspects Of Eco-friendly Soaps and Hand-sanitizersmentioning

confidence: 99%

“…Therefore, emerging extraction techniques such as microwave-assisted extraction, ultrasound-assisted extraction, supercritical fluid extraction, and pulsed electric field extraction are gaining interest. These emerging techniques are regarded as green and sustainable extraction techniques [ 53 , 54 ] and could make these plant-derived antimicrobial agents as viable ingredients in natural hand-sanitizers. However, it is important to look indigenous plants for the economic viability of plant-derived biosurfactants and other natural antimicrobials for their utilization as key ingredients in nature-based soaps and hand sanitizers.…”

Section: Economic Aspects Of Eco-friendly Soaps and Hand-sanitizersmentioning

confidence: 99%

COVID-19: Eco-friendly hand hygiene for human and environmental safety

Daverey

Dutta

2021

Journal of Environmental Chemical Engineering

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Valorization of selected fruit and vegetable wastes as bioactive compounds: Opportunities and challenges

Cited by 105 publications

References 208 publications

Comparative Studies on Different Citrus Cultivars: A Revaluation of Waste Mandarin Components

Comparative Studies on Different Citrus Cultivars: A Revaluation of Waste Mandarin Components

Strategies to Improve the Thermo-Oxidative Stability of Sunflower Oil by Exploiting the Antioxidant Potential of Blueberries Processing Byproducts

COVID-19: Eco-friendly hand hygiene for human and environmental safety

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