Antioxidant properties of the carotenoid extracts of three Deinococcus–Thermus phylum bacteria, Meiothermus sp. strains RP and TP and Thermus sp. strain YY from Paniphala hot spring, India

Mukherjee, Trinetra; Bose, Sucharita; Mukhopadhyay, Subhra Kanti

doi:10.1186/s41110-017-0032-3

Cited by 29 publications

(11 citation statements)

References 23 publications

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“…These beneficial effects have mainly been attributed to the antioxidant capacity of tomatoes, which contributes to preventing an excess of free radicals in human cells. High levels of free radicals in cells are involved in the pathogenesis of many different diseases (Zanfini et al, 2010;Mukherjee et al, 2017). Thus, the carotenoid and phenol contents are important quality attributes of tomato fruits.…”

Section: Introductionmentioning

confidence: 99%

Effect of rhizosphere inoculation with Bacillus strains and phytopathogens on the contents of volatiles and human health-related compounds in tomato fruits

et al. 2022

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This study consisted of determining the effect of Bacillus strains inoculated alone or in combination with phytopathogenic fungi on the production of human health-related compounds and volatile organic compounds (VOCs) in tomato fruits. Seedlings were cultivated under greenhouse conditions and inoculated with B. amyloliquefaciens, B. methylotrophicus and B. subtilis alone or in combination with Alternaria solani, Fusarium oxysporum and Phytophthora infestans. Fully ripe fruits were harvested and evaluated for carotenoid, phenol and VOCs contents. Lycopene was the most abundant carotenoid (46.4-167.62 µg/g), followed by β-carotene and lutein. Fruits from plants inoculated with Bacillus had the highest carotenoid content. In contrast, phytopathogens decreased the carotenoid contents, especially the lycopene content. The content of total phenols ranged from 0.42 to 0.90 mg GAE/g. The content of these compounds increased 1.5-fold in fruits from plants inoculated with Bacillus strains, especially those treated with B. methylotrophicus, but the greatest increase (1.9-fold) was observed in plants inoculated with phytopathogens. Both Bacillus strains and pathogens increased the antioxidant capacity, with a 2.8-fold increase compared to the control. Thirty-two VOCs were identified in the tested tomatoes. The Bacillus strains caused an increase in the concentration of VOCs, which could be associated with an increase in fruit quality.

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Section: Introductionmentioning

confidence: 99%

Effect of rhizosphere inoculation with Bacillus strains and phytopathogens on the contents of volatiles and human health-related compounds in tomato fruits

et al. 2022

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“…This means that these extracts contain components that interfere with the measurement by absorbing at the same wavelength or forming complexes with DPPH and preventing its reduction. It is known that plant pigments interfere with the DPPH method because they absorb visible light in the same region in which the measurement is carried out [12][13][14]. Creams are extremely complex matrices wich can be seen on the compositions indicated on the packaging.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the Suitability of Methods for Testing the Antioxidant Activity of Anti-Aging Creams

et al. 2021

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Anti-aging cosmetics are often sought after in order to slow down the aging process. Free radicals are one of the main causes of skin aging, and therefore antioxidants are used in anti-aging cosmetics. The aim of this study was to investigate which method is the most suitable for determining the antioxidant capacity of these products. Having samples extracted, the antioxidant capacity of the extracts obtained was determined by the following spectrophotometric methods: DPPH, Folin-Ciocalteu, FRAP, the ABTS method and the ferroion chelation method with ferrosine. The antioxidant capacity of the samples varied depending on the extract type and the method used. DPPH and ferroion chelation measurements with ferrosine were carried out in the part of the spectrum where plant pigments absorb. These pigments are often found in anti-aging products affecting these methods measurement results. The Folin-Ciocalteu method is suitable for researching the antioxidant capacity of hydrophilic extracts, but not lipophilic ones, where turbidity and the formation of a gelled ring occur. The FRAP method revealed similar results for all the samples and proved to be less sensitive than the others. The ABTS method for both types of extracts has proven to be the most suitable and sensitive method for determining the antioxidant capacity of anti-aging products.

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“…Kết quả của thí nghiệm đã thực hiện [10]. Bên cạnh đó, kết quả nghiên cứu còn cho thấy rằng, hoạt tính mạnh yếu khác nhau giữa các dòng chủ yếu ảnh hưởng bởi thành phần và hàm lượng các carotenoid khác nhau có trong dịch trích.…”

Section: B Khả Năng Khử Gốc Tự Do Của Dịch Trích Carotenoid Từ VI Khuẩnunclassified

Evaluation of the Antioxidant Activity of Carotenoid Extract From Bacterial Strains Isolated in Nui Cam, Tinh Bien District, an Giang Province

Bang

Van

2020

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The research was conducted to evaluate the antioxidant activity of carotenoid extract from bacteria strainsisolated in An Giang Province. There by, the strain of bacteria with the best antioxidant capacity was selected. The results of DPPH free radical reduction survey on crude carotenoid extracts of the tested bacterial strains showed that all the crude carotenoid extracts of these strains have good DPPH free radical reductionability. Carotenoid extracts from strains NC4-3, NC8-3, NC1-6, NC3-3 and NC7-4 have IC50 values of 2,88; 3,30; 3,45; 5,15 và 9,05 mg/mL, respectively. This showed that the carotenoid extracts of these clones have lower antioxidant activity than the b-carotene control (IC50 = 2,70 mg/mL). Remarkably, the carotenoid extract of theNC4-3 strain had the best antioxidant activity of the 5 strains examined (IC50 = 2,88 mg/mL), only lower than the antioxidant activity of the control sample bcarotene.

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Antioxidant properties of the carotenoid extracts of three Deinococcus–Thermus phylum bacteria, Meiothermus sp. strains RP and TP and Thermus sp. strain YY from Paniphala hot spring, India

Cited by 29 publications

References 23 publications

Effect of rhizosphere inoculation with Bacillus strains and phytopathogens on the contents of volatiles and human health-related compounds in tomato fruits

Effect of rhizosphere inoculation with Bacillus strains and phytopathogens on the contents of volatiles and human health-related compounds in tomato fruits

Assessment of the Suitability of Methods for Testing the Antioxidant Activity of Anti-Aging Creams

Evaluation of the Antioxidant Activity of Carotenoid Extract From Bacterial Strains Isolated in Nui Cam, Tinh Bien District, an Giang Province

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