Phenolic composition and nutritional attributes of diaphragma juglandis fructus and shell of walnut (Juglans regia L.)

Liu, Jia; Li, Jun; Liu, Hui; Dong, Nan; Geng, Yangyang; Lu, Yang; Yan, Wang

doi:10.1007/s10068-019-00655-z

Cited by 19 publications

(24 citation statements)

References 28 publications

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“…In a recent study by Hu et al [20] in which phe-nolic composition and nutritious characteristics of WKS was investigated, TPC of WKS has been reported as 73.66 ± 0.73 g/100 gDW. In another study conducted by Liu et al [21], polyphenol profile of WKS was aimed to be identified and it was determined that there were 75 individual phenolic compounds.…”

Section: Discussionmentioning

confidence: 98%

Investigation of antioxidant and antimicrobial activities of walnut (Juglans regia L.) kernel septum

DELİBAŞ

Kiray

2023

The European Research Journal

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Objectives: Walnut (Juglans regia L.) kernel septum (or septa) (WKS), a traditional nutraceutical material in China, has not been explored in detail. In this study, antimicrobial activity, total phenolic content (TPC) and antioxidant-oxidant status of WKS was investigated in case it may be clinically important in the management of various complications. Methods: The WKS was extracted with ethanol in a Soxhlet device. TPC of WKS was analysed by using Folin-Ciocalteu’s method. Antioxidant activity was obtained by using Rel Assay Diagnostics kits. The antimicrobial activity of WKS was evaluated against two Gram-positive (Staphylococcus aureus, Bacillus subtilis), one Gram-negative bacteria (Escherichia coli) and one fungus (Candida albicans) strains using the agar diffusion method. Results: The TPC of WKS was found to be 119.42 ± 2.39 mg GAE/gDW. It was determined that total antioxidant status (TAS), total oxidant status (TOS) and oxidative stress index (OSI) values were 7.542 ± 0.389 mmol/L, 3.718 ± 0.287 µmol/L and 0.049 ± 0.001, respectively. WKS selectively inhibited the growth of Gram-positive bacteria and fungus, while S. aureus was the most susceptible one with 16 mm of inhibition zone. Gram-negative bacteria was resistant to the extract. Conclusions: As far as we know, this paper is the first work that demonstrates the antioxidant-oxidant status of WKS by using the method described above, and moreover there are no scientific reports which have examined WKS in such a multidisciplinary experimental design. This study strongly supports the reported traditional use of WKS. Results indicated that WKS can be used as a pharmacological natural agent due to its high antioxidant and antimicrobial activities.

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Section: Discussionmentioning

confidence: 98%

Investigation of antioxidant and antimicrobial activities of walnut (Juglans regia L.) kernel septum

DELİBAŞ

Kiray

2023

The European Research Journal

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“…The walnut ( Juglans regia L.) is consumed globally as a high economic value crop [ 1 ]. The edible portion of walnuts (kernel) has been processed into many types of foods due to its unique and highly nutritious nature and health-related benefits [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

The Chemical Constituents of Diaphragma Juglandis Fructus and Their Inhibitory Effect on α-Glucosidase Activity

et al. 2022

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In our current investigation, 37 constituents (1–37), including 11 megastigmanes (1–11), 17 flavonoids (12–28) and 9 phenylpropanoids (29–37), were isolated from a 70%-EtOH extract of Diaphragma juglandis Fructus. Among them, compounds 1–3, 12 and 29 were new compounds and their structures were elucidated on the basis of physicochemical evidence and meticulous spectroscopic analysis (NMR, HRESIMS and CD). Compounds 13, 16, 21 and 28 showed moderate inhibitory effect on α-glycosidase inhibitory activities, with IC50 values being in the range of 29.47–54.82 µM and stronger than the positive control (acarbose, 60.01 ± 4.82 µM).

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“…The nutritional constituents of two foliose and two fruticose forms of lichen species were documented as described by Hu et al (2020); Rahman et al (2018); Kekuda, et al (2011); Joubert et al (1982). The previous literature asserted that the nutritional contents of lichens such as tannins, flavonoids and phenolics are being used as medicine and can be useful to fortify them in human foods.…”

Section: Discussionmentioning

confidence: 99%

Untitled

2021

JJBS

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Instructions to AuthorsScopes Study areas include cell biology, genomics, microbiology, immunology, molecular biology, biochemistry, embryology, immunogenetics, cell and tissue culture, molecular ecology, genetic engineering and biological engineering, bioremediation and biodegradation, bioinformatics, biotechnology regulations, gene therapy, organismal biology, microbial and environmental biotechnology, marine sciences. The JJBS welcomes the submission of manuscript that meets the general criteria of significance and academic excellence. All articles published in JJBS are peerreviewed. Papers will be published approximately one to two months after acceptance.

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Phenolic composition and nutritional attributes of diaphragma juglandis fructus and shell of walnut (Juglans regia L.)

Cited by 19 publications

References 28 publications

Investigation of antioxidant and antimicrobial activities of walnut (Juglans regia L.) kernel septum

Investigation of antioxidant and antimicrobial activities of walnut (Juglans regia L.) kernel septum

The Chemical Constituents of Diaphragma Juglandis Fructus and Their Inhibitory Effect on α-Glucosidase Activity

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