Use of hydrogen-rich water as a green solvent for the extraction of phytochemicals: Case of olive leaves

Alwazeer, Duried; Elnasanelkasim, Muhammed Allam; Engin, Tunahan; Çiğdem, Ayhan

doi:10.1016/j.jarmap.2023.100472

Cited by 6 publications

(16 citation statements)

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“…HRW could effectively increase the extraction of both nonflavonoids (hydroxybenzoic and hydroxycinnamic acids) and flavonoids from agri-food wastes. 30 In tomato peel HRW extracts, gallic acid, chlorogenic acid, caffeic acid, catechin, and rutin levels were increased up to threefold compared to pure water extracts. In red cabbage HRW extracts, gallic acid, p-coumaric acid, epicatechin, and rutin levels were increased 82-, 6.7-, 3-, and 4-fold, respectively, compared to pure water extracts.…”

Section: Agri-food Wastesmentioning

confidence: 96%

“…Several agri-food wastes and by-products were analyzed using this method, and it was found to be highly effective. [30][31][32][33][34] The infusion of hydrogen gas in the extraction process has significantly increased the extraction efficiency. 26,[30][31][32][33][34] This innovative method is eco-friendly as there are reduced hazards associated with using chemical solvents, which can be harmful to the environment.…”

Section: Examples Of Applications Of Hrs In Phytochemical Extractionmentioning

confidence: 99%

“…stavis) using HRW as a green solvent. 30 Extracts were prepared by adding 1 g of plant powder to 20 mL of solvent, followed by a 24-h incubation period in a shaking incubator (120 rpm, 25 C). HRW was prepared by two methods: hydrogen gas bubbling and magnesium reaction with water.…”

Section: Agri-food Wastesmentioning

confidence: 99%

“…The results of these possible scenarios of reducing quinones and semiquinones by H 2 can be observed by comparing the HRS extracts of many agri-food wastes and by-products with normal solvent extracts. 30,33,36 Moreover, the redox potential of the environment can also affect the stability and reactivity of quinones and their ability to be reduced by H 2 . For example, in environments with high redox potential, quinones may be stabilized in their oxidized form and may not be readily reduced by H 2 .…”

Section: The Possible Effect Of H 2 On Quinonesmentioning

confidence: 99%

“…63,64 Our research has revealed that the use of HRSs could improve the extraction of phenolic and flavonoid compounds from different plant materials. 26,30,[32][33][34]36 Nonetheless, the presence of H 2 in the solvent could potentially protect phytochemicals from oxidative reactions during the extraction process. This is particularly crucial in cases where the plant materials are subjected to grinding or immersion, which can destroy their structure and make them more susceptible to oxygen and oxidative reactions.…”

Section: The Possible Effect Of H 2 On Rosmentioning

confidence: 99%

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Hydrogen‐rich solvent method in phytochemical extraction: Potential mechanisms and perspectives

Alwazeer

2023

Phytochemical Analysis

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IntroductionPhytochemicals are used in many products, including foods, beverages, pharmaceuticals, and cosmetics. The extraction of phytochemicals is considered one of the best solutions to valorize these underestimated materials. Many methods have been developed to efficiently extract phytochemicals at high quality, high purity, and low costs without harming the environment. Recently, molecular hydrogen (H2) has shown its ability to improve the extraction of phytochemicals from plant materials. Due to its unique physicochemical and biological properties, H2 showed an efficient ability to extract phenolics and antioxidants at high yields with cost‐effective potential. Without sophisticated equipment and high energy and solvent consumption, the hydrogen extraction method is a green and applicable alternative for the extraction of phytochemicals.ObjectivesThis review aims to provide the latest knowledge and results concerning the studies on using hydrogen‐rich solvents to extract phytochemicals from different agri‐food wastes, by‐products, and other plant materials.Materials and MethodsRecent literature relating to extracting phytochemicals by the hydrogen‐rich solvent method and its potential mechanisms is summarized to provide a basic understanding of how hydrogen can improve the extraction of phytochemicals.ResultsThis review describes, for the first time, the practical procedure of how researchers and laboratories can apply the hydrogen extraction method under safe conditions at a low‐budget scale. The review provides some examples of the hydrogen extraction method and the mechanisms and rationale behind its effectiveness.ConclusionsIt can be concluded that the hydrogen‐rich solvent method is a green and cost‐effective method for extracting phytochemicals from different plant materials.

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Section: Agri-food Wastesmentioning

confidence: 96%