Red onion skin active ingredients, extraction and biological properties for functional food applications

Chadorshabi, Sara; Hallaj‐Nezhadi, Somayeh; Ghasempour, Zahra

doi:10.1016/j.foodchem.2022.132737

Cited by 43 publications

(13 citation statements)

References 80 publications

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“…Based on the flavonoid content of shallot flour, it can be concluded that shallot skin flour can lower cholesterol levels when mixed into duck feed [4]. Shallot waste besides containing quercetin also contains high dietary fiber so that it can lower cholesterol levels and reduce cardiovascular disease [1]. Cholesterol is a steroid, which is a type of lipid that is a fat molecule or something similar.…”

Section: Tegal Ducks Blood Hemoglobinmentioning

confidence: 99%

“…Introduction Shallots are one type of vegetable that is quite old and familiar since ancient times besides tomatoes. Shallot production increases every year and is one of the most important in the world [1]. Over the last decade, shallot production has increased rapidly and its production level has reached nearly 98 million tonnes worldwide, of which 550,000 thousand tonnes of shallot skin waste is produced each year, causing environmental problems [2].…”

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confidence: 99%

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Brebes Shallot Skin Waste Feed Mixture as a Lowering of Tegal Duck Cholesterol Levels

Unzilatirrizqi D,

Mukodiningsih,

Cahyono

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Onion skin is one of the causes of waste in Brebes Regency. Handling shallot skins can be done by utilizing them as feed additive for ducks, which are also commonly encountered. Onion skin contains active compounds such as flavonoids, terpenoids, and phenols, which can act as an antibacterial and as an alternative herbal feed additive replacement for antibiotics. Shallot skin contains compounds that can reduce cholesterol levels. This study aims to analyze the addition of shallot skin waste flour in feed to see the level of cholesterol (LDL) reduction in the blood of Tegal ducks and their hemoglobin levels. The study was conducted using a completely randomized design with a single factor with three levels of treatment and repetition. The results of the addition of shallot skin waste flour showed a significant reduction in blood cholesterol levels in Tegal ducks. The results showed that the average cholesterol level for the first treatment was 9.8 mg/dl, the second treatment was 3.4 mg/dl, and the third treatment was 1.3 mg/dl. The lowest cholesterol content was found in ducks with the addition of 30% shallot skin flour feed.

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Section: Tegal Ducks Blood Hemoglobinmentioning

confidence: 99%

mentioning

confidence: 99%

Brebes Shallot Skin Waste Feed Mixture as a Lowering of Tegal Duck Cholesterol Levels

Unzilatirrizqi D,

Mukodiningsih,

Cahyono

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…В луке обнаружена богатая концентрация флавоноидных полифенолов и кверцетина. В луке содержится серосодержащие элементы -аллилсульфиды, диаллилсульфиды (DMS, DDS, DTS, и DTTS) и сульфоксиды [20,21].…”

Section: результаты и их обсуждениеunclassified

Cereals and Cereal Products for Dietary Preventive Nutrition

Urubkov¹,

Korolev²,

Smirnov³

2022

Food Processing: Techniques and Technology

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Providing senior citizens with specialized gerontological products is one of the most important tasks of the contemporary food industry. The research objective was to develop targeted functional foods for elderly population based on the peculiarities of their metabolism. The new products included raw materials with a low glycemic index and a high protein content but a low fat and carbohydrate content, e.g., lentil, pea, and barley flour. Kelp powder served as a source of iodine. The content of proteins, fats, and carbohydrates was studied by infrared spectroscopy using a Spectastar 2500 analyzer. Vitamins, minerals, and trace elements were measured by classical and modern analysis methods. The research also included a sensory evaluation of the new cereals and cereal products. As for the basic nutrients, the protein content was 20.96–24.33 g/100 g, fat – 3.36–3.49 g/100 g, carbohydrates – 45.07–47.10 g/100 g, energy – 327–333 kcal/100 g. One portion (150 g) satisfied the recommended daily intake of proteins by 18.0%, fats – by 2.9%, carbohydrates – by 9.1%, dietary fiber – by 30.5%, and energy – by 9.13%. The new products had a good nutritional value and were rich in protein, dietary fiber, vitamins, and micro- and macro-elements, e.g., iodine. The new cereals and cereal products can also be used in diets for senior patients with comorbid pathology.

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“…This residual biomass is rather underutilized because it is not suitable for fodder production due to the strong pungent smell, but it cannot be used as a fertilizer either. However, onion solid wastes (OSW) are a source rich in bioactive substances [4], such as quercetin and quercetin conjugates, including quercetin 4 -O-glucoside [5]. OSW also contain a range of quercetin derivatives, arising from peroxidase-catalyzed oxidations of quercetin and its glycosides.…”

Section: Introductionmentioning

confidence: 99%

Glycerol-Based Deep Eutectic Solvents for Simultaneous Organosolv Treatment/Extraction: High-Performance Recovery of Antioxidant Polyphenols from Onion Solid Wastes

et al. 2022

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Onion solid wastes (OSW) are a food side-stream with high polyphenolic load and distinguished polyphenolic profile. This study was conducted in order to explore a novel methodology of production of polyphenol-enriched extracts with antioxidant properties from OSW, using glycerol and green deep eutectic solvents (DES), composed of glycerol/citric acid and glycerol/sodium acetate. The organosolv process developed was appraised by establishing models based on severity, but also response surface methodology. Using a linear model, it was, for the first time, proposed that there is a direct correlation between the yield of the process in total polyphenols and the combined severity factor. Furthermore, response surface optimization enabled the establishment of linear models to predict the effects of time and temperature on the total polyphenol extraction yield. Out of the solvents tested, the DES composed of citric acid and glycerol was found to provide the highest yield in total polyphenols (87.90 ± 3.08 mg gallic acid equivalents per g dry mass) at significantly higher combined severity. However, the extraction efficiency of this solvent was virtually equal to that of the two other solvents tested. On the other hand, the polyphenolic composition of the extract obtained with the glycerol/citric acid DES was characterized by exceptionally high quercetin concentration. This extract also displayed the highest antioxidant activity. Based on the evidence emerged, it was proposed that OSW polyphenol extraction with the DES glycerol/citric acid could be used for production of extracts enriched in the bioactive flavonoid quercetin, with enhanced antioxidant activity. Moreover, using this green methodology, 27.59 ± 0.09 g of pure quercetin could be recovered out of 1 kg OSW. Thus, this methodology could be employed as a sustainable means of producing quercetin, through valorization of food wastes in a biorefinery context.

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Red onion skin active ingredients, extraction and biological properties for functional food applications

Cited by 43 publications

References 80 publications

Brebes Shallot Skin Waste Feed Mixture as a Lowering of Tegal Duck Cholesterol Levels

Brebes Shallot Skin Waste Feed Mixture as a Lowering of Tegal Duck Cholesterol Levels

Cereals and Cereal Products for Dietary Preventive Nutrition

Glycerol-Based Deep Eutectic Solvents for Simultaneous Organosolv Treatment/Extraction: High-Performance Recovery of Antioxidant Polyphenols from Onion Solid Wastes

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