Flavonoids from the leaves of Actinidia kolomikta

Lu, Juan; Jin, Young-Woo; Liu, Guiying; Zhu, Na; Gui, Ming-Yu; Yu, Aimin; Li, Xuwen

doi:10.1007/s10600-010-9569-6

Cited by 19 publications

(14 citation statements)

References 7 publications

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“…[10] Comparing with the reported data, the 1 H NMR and 13 C NMR data are in agreement with those of Isoorientin and Isoorientin 6″-O-acetate in the literature. [8][9][10][11] Compound 3: 3,4-dihydro-6,8-dihydroxy-3-methylisocoumarin (6-hydroxymellein) Figure 3 [4] Analytical CPG/SM of the ethyl acetate extract of Retura lutea indicated the presence of three major volatile compounds. The major constituent which eluted at a lower temperature was identified as 3,4-dihydro-6, 8-dihydroxy-3-methylisocoumarin) with a retention time of 18.270 min (Figure 4).…”

Section: Resultssupporting

confidence: 89%

Chemical constituents of the extract Algerian Reutera lutea (Desf.) Maire, (Apiaceae)

Makhloufi¹,

Akkal²,

Medjroubi³

et al. 2013

Phcog Commn

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International audiencePhytochem. anal. of the aerial parts of Reutera lutea (Apiaceae), resulted in the isolation of two flavonoid C-glucosides and isocoumarine. The structures of the compds. were established as Isoorientin (1), Isoorientin 6''-O-acetate (2) and 3,4-dihydro-6, 8-dihydroxy-3-methylisocoumarin (3). The structures of all compds. were elucidated by spectroscopic methods, including (1D and 2D NMR, UV, MS)

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Section: Resultssupporting

confidence: 89%

Chemical constituents of the extract Algerian Reutera lutea (Desf.) Maire, (Apiaceae)

Makhloufi¹,

Akkal²,

Medjroubi³

et al. 2013

Phcog Commn

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“…Hemolysis induced by AAPH [2,2'-azobis(2-methylpropionamidine) dihydrochloride] was determined by the method of Lu et al . [55] with the following modifications. The erythrocytes were washed threes time with phosphate buffer saline (PBS) pH 7.4, then a suspension of human erythrocyte in (5%) PBS was prepared.…”

Section: Methodsmentioning

confidence: 99%

Physicochemical, Antimicrobial and Antioxidant Properties of Chitosan Films Incorporated with Carvacrol

et al. 2013

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Chitosan films (CF) with carvacrol (CAR) [0.5%, 1.0% and 1.5% v/v] were prepared by the emulsion method. The retained CAR, water solubility, water vapor permeability (WVP), optical, mechanical properties, antibacterial and antioxidant capacity of films were analyzed. The results indicate that the retention of CAR in the CF was ≈50%. The incorporation of CAR to CF decreased the water solubility, the WVP, the yellowing and transparency and the tensile strength, but increased the stiffness. Microcapsules with diameters of 2 to 7 µm were found on the surface CF-CAR. The CF-CAR with highest CAR concentrations showed antibacterial activity against S. typhimurium and E. coli O157:H7. The CF-CAR had higher antioxidant capacity and an increased protective effect against oxidation of erythrocytes in different grades. These results suggest potential applications of CF-CAR as active packaging to preserve food products.

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“…To perform anti-hemolytic activity, firstly the hemolysis was induced by AAPH (2,2′-azobis-[2-methylpropionamidine]) radical according to the methodology of Lu et al (2010) with some modifications. The globular package was separated from the plasma by centrifugation at 2000 × g for 10 min at 4 °C.…”

Section: Methodsmentioning

confidence: 99%

“…The supernatant was read at 540 nm on a 96-well microplate. The half maximal-inhibitory concentration (IC 50 ) was determined following Lu et al (2010) procedure. The percentage of hemolysis inhibition (% HI) was obtained from the equation (5) :

where AAPH 1 is the optical density of the hemolysis caused per radical AAPH, and HS is the optical density of the hemolysis inhibition by each treatment.…”

Section: Methodsmentioning

confidence: 99%

Optimization of growing conditions for pigments production from microalga Navicula incerta using response surface methodology and its antioxidant capacity

González-Vega

Cárdenas-López

López‐Elías

et al. 2021

Saudi Journal of Biological Sciences

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Navicula incerta is a marine microalga distributed in Baja California, México, commonly used in aquaculture nutrition, and has been extended to human food, biomedical, and pharmaceutical industries due to its high biological activity. Therefore, the study aimed to optimize culture conditions to produce antioxidant pigments. A central composite experimental design and response surface methodology (RSM) was employed to analyze the best culture conditions. The medium (nitrogen-deficient concentrations), salinity (PSU = Practical Salinity Unity [g/kg]), age of culture (days), and solvent extraction (ethanol, methanol, and acetone) were the factors used for the experiment. Chlorophyll a (Chl a) and total carotenoids (T-Car), determined spectroscopically, were used as the response variables. The antioxidant capacity was evaluated by DPPH • and ABTS •+ radical inhibition, FRAP, and anti-hemolytic activity. According to the overlay plots, the optimum growth conditions for Chl a and T-Car production were the following conditions: medium = 0.44 mol·L -1 of NaNO 3 , salinity = 40 PSU, age of culture: 3.5 days, and solvent = methanol. The pigment extracts obtained in these optimized conditions had high antioxidant activity in ABTS •+ (86.2–92.1% of inhibition) and anti-hemolytic activity (81.8–96.7% of hemolysis inhibition). Low inhibition (33–35%) was observed in DPPH • . The highest value of FRAP (766.03 ± 16.62 μmol TE/g) was observed in the acetonic extract. The results demonstrated that RSM could obtain an extract with high antioxidant capacity with potential applications in the biomedical and pharmaceutical industry, which encourages the use of natural resources for chemoprevention of chronic-degenerative pathologies.

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Flavonoids from the leaves of Actinidia kolomikta

Cited by 19 publications

References 7 publications

Chemical constituents of the extract Algerian Reutera lutea (Desf.) Maire, (Apiaceae)

Chemical constituents of the extract Algerian Reutera lutea (Desf.) Maire, (Apiaceae)

Physicochemical, Antimicrobial and Antioxidant Properties of Chitosan Films Incorporated with Carvacrol

Optimization of growing conditions for pigments production from microalga Navicula incerta using response surface methodology and its antioxidant capacity

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