Antioxidant capacities and total phenolic contents of 30 flowers

Chen, Guanlin; Chen, Song-Gen; Xiao, Yi; Fu, N.

doi:10.1016/j.indcrop.2017.10.051

Cited by 100 publications

(73 citation statements)

References 69 publications

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“…(‐)epi‐catechin has been recognized as the most common flavonoids of green teas (Forester & Lambert, ; Kim, Quon, & Kim, ). Identification of (‐)epi‐catechin in medicinal plants have also been correlated with their antioxidant activities (Chen, Chen, Xiao, & Fu, ; Grzesik, Naparło, Bartosz, & Sadowska‐Bartosz, ). Quercetin is one of the most studied flavonoids and has been reported for its potent antioxidant activities (Bentz, ; Ozgen, Kilinc, & Selamoğlu, ).…”

Section: Discussionmentioning

confidence: 99%

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Histochemistry, phenolic content, antioxidant, and anti-diabetic activities ofVernonia amygdalinaleaf extract

et al. 2018

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Vernonia amygdalina leaves were investigated for their histochemical properties and antidiabetic activities. Histochemical analysis of the leaf revealed distributions of acidic lipid, mucilage, and pectin, lipids, polyphenols, and alkaloids at the mid rib, glandular trichome, and epidermis. HPLC analysis of the leaves hot water infusion revealed the presence of quercetin and (‐)‐epi‐catechin. The infusion had significant (p < 0.05) 2,2′‐diphenyl‐1‐picrylhydrazyl scavenging activity and ferric reducing antioxidant power. Ex vivo antioxidative analysis revealed the ability of the infusion to increase glutathione level, superoxide dismutase, and catalase activities, while concomitantly depleting malondialdehyde level and DNA fragmentation in Fe2+‐induced hepatic injury. The infusion showed significant (p < 0.05) inhibitory activity against α‐glucosidase and pancreatic lipase. It also inhibited intestinal glucose absorption and enhanced muscle glucose uptake, respectively. The ability of the infusion to abate oxidative stress, DNA fragmentation and stimulate muscle glucose uptake may suggest the antioxidative, anti‐apoptotic, and insulin‐sensitizing activity of V. amygdalina. Practical applications Vernonia amygdalina (bitter leaf) is among the common leafy vegetables in West Africa reported for its various medicinal and nutritional properties. It is utilized as a food ingredient as well as supplement for the treatment and management of type 2 diabetes (T2D). Its ability to inhibit intestinal glucose absorption, enhance muscle glucose uptake, and protect against hepatic oxidative stress gives more credence to its reported antidiabetic properties. Being a common leafy vegetable, V. amygdalina can be a cheap source of nutraceutical for the treatment and management of T2D and its complications.

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Section: Discussionmentioning

confidence: 99%

“…Identification of (-)epi-catechin in medicinal plants have also been correlated with their antioxidant activities (Chen, Chen, Xiao, & Fu, 2018;Grzesik, Naparło, Bartosz, & Sadowska-Bartosz, 2018).…”

Section: Discussionmentioning

confidence: 99%

Histochemistry, phenolic content, antioxidant, and anti-diabetic activities ofVernonia amygdalinaleaf extract

et al. 2018

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“…A peak was observed in F2 petals with a subsequent decrease up to F5 (Figure 2E). Different studies reported that bioactivity of edible flowers is highly correlated to bioactive compounds especially to phenolic compounds composition [48][49][50][51]. Significant differences in both phenolic compounds and antioxidant activity between edible flowers have been found [49].…”

Section: Bioactive Compounds and Antioxidant Activitymentioning

confidence: 99%

“…Significant differences in both phenolic compounds and antioxidant activity between edible flowers have been found [49]. Chen et al [50] demonstrated that Rosa rugosa Thunb. have been found [49].…”

Section: Bioactive Compounds and Antioxidant Activitymentioning

confidence: 99%

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Evaluation of Antioxidant Systems and Ascorbate-Glutathione Cycle in Feijoa Edible Flowers at Different Flowering Stages

Magri¹,

Adiletta

Petriccione³

2020

Foods

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Background: Feijoa (Acca sellowiana (O. Berg)) was initially introduced as an ornamental plant, but nowadays, it is widely cultivated for the numerous beneficial properties of its edible fruits. Feijoa flowers have been included in the list of edible flowers, but despite this, they are still considered niche products due to consumer skepticism and lack of publicity. Methods: This study evaluated the physicochemical traits, antioxidant system, and ascorbate-glutathione cycle in feijoa flowers at five flowering stages based on the Biologische Bundesanstalt, Bundessortenamt und CHemische Industrie (BBCH) scale. Results: The results showed that the optimal stage to harvest feijoa flower is the F2 stage characterized by high bioactive compounds content. Furthermore, the enzymes involved in oxidative stress and the ascorbate-glutathione cycle showed different trends during the flowering stages. Conclusions: This study provides new evidence to understand the possible role of bioactive compounds and ascorbate-glutathione cycle in the regulation of flower development, defining the optimal stage to harvest flowers.

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The Inhibitory Activity of Natural Products to Xanthine Oxidase

Zhou

Huang

2023

Chemistry & Biodiversity

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The natural products have a new chemical structure and biological active diversity, so they are favored by scientific researchers. Gout is a high incidence and high-risk disease, and the current treatments are not satisfactory. Xanthine oxidase (XO) is a key enzyme responsible for the development and progression of various metabolic and oxidative stress-related diseases. Excessive activity of XO leads to elevated serum urate levels, which in turn leads to the development of hyperuricemia. This review mainly introduces the recent progress of the new research on the anti-gout activity of natural products that could provide new treatment methods for gout and information for the discovery and development of new antigout drugs.

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Antioxidant capacities and total phenolic contents of 30 flowers

Cited by 100 publications

References 69 publications

Histochemistry, phenolic content, antioxidant, and anti-diabetic activities ofVernonia amygdalinaleaf extract

Histochemistry, phenolic content, antioxidant, and anti-diabetic activities ofVernonia amygdalinaleaf extract

Evaluation of Antioxidant Systems and Ascorbate-Glutathione Cycle in Feijoa Edible Flowers at Different Flowering Stages

The Inhibitory Activity of Natural Products to Xanthine Oxidase

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