Chemical composition and antioxidant, α-glucosidase inhibitory and antibacterial activities of three Echeveria DC. species from Mexico

López‐Ángulo, Gabriela; Montes‐Ávila, Julio; Díaz‐Camacho, Sylvia Páz; Vega-Aviña, Rito; Ahumada-Santos, Yesmi Patricia; Delgado‐Vargas, Francisco

doi:10.1016/j.arabjc.2014.11.050

Cited by 20 publications

(28 citation statements)

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“…In this regard, the highest values from 12 to 20 days corresponded to the hot water treated (HW and HW‐Ca) papayas (HW‐Ca at 20 d, ~180 µmol TE/100 g FW), whereas those of the untreated and Ca treated papayas were similar (~150 µmol TE/100 g FW at 20 d) (Figure a,b). The ABTS values were about 2.5 times higher than DPPH values, perhaps because ABTS measures the activity of both hydrophilic and lipophilic components, whereas DPPH detects mainly hydrophilic components (López‐Angulo et al, ).…”

Section: Resultsmentioning

confidence: 99%

“…Total phenolics were measured according to López‐Angulo et al (). Concentrated methanol extract (20 μL) was mixed with 180 μL of Folin‐Ciocalteu reagent, and 50 μL of 7% Na 2 CO 3 .…”

Section: Methodsmentioning

confidence: 99%

“…. The ABTS values were about 2.5 times higher than DPPH values, perhaps because ABTS measures the activity of both hydrophilic and lipophilic components, whereas DPPH detects mainly hydrophilic components(López-Angulo et al, 2014).…”

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confidence: 86%

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Bioactive compounds and antioxidant activity of papaya inoculated withColletotrichum gloeosporioidesas affected by hot water-calcium chloride

et al. 2018

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The application of technologies to reduce papaya (Carica papaya L.) anthracnose, a disease caused by the fungus Colletotrichum gloeosporioides, most of the time results in a loss of nutrients and other bioactive compounds. This study was performed to determine the effect of hot water (HW; 48°C/20 min), calcium chloride (Ca; 1%/20 min), and their combination (HW‐Ca) in bioactive compounds and antioxidant activity of papaya inoculated with Colletotrichum gloeosporioides stored during 20 days at 12°C. HW‐Ca treated fruits showed higher ascorbic acid, phenolics content, and antioxidant activity than untreated and HW and Ca treated fruit, which correlated with the contents of ascorbic acid, phenolics, and β‐cryptoxanthin. Also, HW‐Ca treatment resulted in fruits showing lower decay area, greater firmness and color retention. The results suggest that HW‐Ca treatment could be used to reach higher antioxidant activity values and to preserve the postharvest quality parameters, whereas the development of anthracnose symptoms was delayed. Practical applications Papaya infected by Colletotrichum gloeosporioides and treated with hot water (HW) in combination with calcium chloride (Ca) had a good firmness, color retention, and higher antioxidant activity and content of ascorbic acid and phenolics, while the development of anthracnose symptoms was delayed. In this sense, the proposed HW‐Ca treatment of papaya is a strategy to protect against Colletotrichum gloeosporioides and to obtain fruits with good quality, resulting in an interesting postharvest alternative to the application of fungicides.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Bioactive compounds and antioxidant activity of papaya inoculated withColletotrichum gloeosporioidesas affected by hot water-calcium chloride

et al. 2018

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“… 1998 ) and for three species of Echeveria ( r = 1.00, p = 0.03) (López-Angulo et al. 2014 ). Our results showed a significant correlation between AA and TP determined by the Folin-Ciocalteu spectrophotometric method, but not between AA and the content of the main phenolics determined by HPLC.…”

Section: Discussionmentioning

confidence: 99%

Chemical composition and biological activities of Helicteres vegae and Heliopsis sinaloensis

Olivas-Quintero

López‐Ángulo

Montes‐Ávila

et al. 2017

Pharmaceutical Biology

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Context:Helicteres vegae Cristóbal (Sterculiaceae) (Hv) and Heliopsis sinaloensis B.L. Turner (Asteraceae) (Hs) are endangered and poorly studied plant species; related plants have been used against chronic-degenerative and infectious diseases. Therefore, Hv and Hs could be sources of bioactive compounds against these illnesses.Objective: To determine the chemical composition and biological activities (antioxidant, antimutagenic and antimicrobial) of Hv and Hs leaves (L) and stems (S).Materials and methods: Methanol extracts (ME) of each plant/tissue were evaluated for their phytochemicals; phenolics (HPLC-DAD-ESI-MS); antioxidant activity (AA) (0.125–4 mg/mL) (DPPH, ABTS, ORAC and β-carotene discoloration); antimutagenicity (0.5 and 1 mg/plate) (Ames assay, tester strain Salmonella enterica serovar Typhimurium YG1024, 1-nitropyrene as mutagen); activity against human pathogens (1 mg/mL); and toxicity (0.01–2 mg/mL) (Artemia salina assay).Results: All ME showed flavonoids and triterpenes/steroids. The ME-SHv had the highest content of total phenolics (TP) (2245.82 ± 21.45 mg GAE/100 g d.w.) and condensed tannins (603.71 ± 1.115 mg CE/100 g d.w.). The compounds identified were flavonoids (kaempferol 7-O-coumaroylhexoside, and two kaempferol 7-O-rhamnosylhexosides) and phenolics [rosmarinic acid, and 3′-O-(8″-Z-caffeoyl) rosmarinic acid]. The ME-LHs showed the highest content of flavonoids (357.88 mg RE/g d.w.) and phenolic acids (238.58 mg CAE/g d.w.) by HPLC. The ME-SHv showed the highest AA. All ME were strong antimutagens (63.3-85.7%). Only the Hs extracts were toxic (ME-LHs, LC50 = 94.9 ± 1.7 μg/mL; ME-SHs, LC50 = 89.03 ± 4.42 μg/mL).Discussion and conclusions: Both Hv and Hs are potential sources of preventive and therapeutic agents against chronic-degenerative diseases.

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“…The hydroethanolic extracts were richer in phenolics (100.988 mg GAE/g) and flavonoids (94.811 mg QE/g) (p < 0.05) followed by the EtOAc and n-BuOH extracts, but had the lowest condensed tannins (9.320 mg CE/g). In a previous study, comparing three plants belonging to the Crassulaceae family [12] flavonoids content did not exceed 36.4 mg QE/g of extract. This result indicates the richness of A. arboreum in phenols, mainly flavonoids.…”

Section: Total Phenolics Flavonoids and Condensed Tannins Contents Of Various Extracts From A Arboreum Leavesmentioning

confidence: 76%

ESI-MS/MS Analysis of Phenolic Compounds from Aeonium arboreum Leaf Extracts and Evaluation of their Antioxidant and Antimicrobial Activities

et al. 2021

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Aeonium is a genus of succulents belonging to the Crassulaceae family. Their importance in traditional medicine has stimulated both pharmacological and chemical research. In this study, we optimized extraction, separation, and analytical conditions using a high performance liquid chromatographic method coupled with electrospray ionization mass spectrometry by the negative mode (HPLC-ESI-MS) in order to, for the first time, determine thirty-four compounds from Aeonium arboreum leaves. Twenty-one of them are assigned among which are sixteen flavonoids and five phenolic acids. FRAP, TAC, DPPH, and ABTS•+ radical scavenging were used to evaluate antioxidant activity. The obtained IC50 values ranged from 0.031 to 0.043 mg.mL−1 for DPPH and between 0.048 and 0.09 mg·mL−1 for ABTS•+. Antimicrobial activity was also assessed. The obtained minimum inhibitory concentrations (MIC) of these extracts ranged from 12.5 to 50 µg·mL−1 against Micrococcus luteus, Listeria ivanovii, Staphylococcus aureus, Salmonella enterica, Escherichia coli, Pseudomonas aeruginosa, Aspergillus niger, and Fusarium oxysporum, and from 25 to 50 µg·mL−1 against Candida albicans. Therefore, these extracts can be considered as a potential source of biological active compounds.

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Chemical composition and antioxidant, α-glucosidase inhibitory and antibacterial activities of three Echeveria DC. species from Mexico

Cited by 20 publications

References 46 publications

Bioactive compounds and antioxidant activity of papaya inoculated withColletotrichum gloeosporioidesas affected by hot water-calcium chloride

Bioactive compounds and antioxidant activity of papaya inoculated withColletotrichum gloeosporioidesas affected by hot water-calcium chloride

Chemical composition and biological activities of Helicteres vegae and Heliopsis sinaloensis

ESI-MS/MS Analysis of Phenolic Compounds from Aeonium arboreum Leaf Extracts and Evaluation of their Antioxidant and Antimicrobial Activities

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