Synthesis of Hydroxystilbene Derivatives and their Antioxidant Activity by DPPH Method1

Li, Y; Song, Qiang; Chen, P; Zhao, Wenguang; Wang, S

doi:10.1016/s1005-9040(06)60202-x

Cited by 10 publications

(5 citation statements)

References 10 publications

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“…The rates of DPPH radical scavenging in the extracts were measured by the DPPH method (Li et al, 2006). Fragments of seed (1.0 g, removed at various points from 0-168 h), along with 5.0 mL water, were extracted by ultrasound for 30 min and centrifuged at 5000 rpm for 5.0 min.…”

Section: Dpph Radical Scavenging Activitymentioning

confidence: 99%

Increased antioxidant activity and polyphenol metabolites in methyl jasmonate treated mung bean (Vigna radiata) sprouts

Dong

Ren

et al. 2017

Food Sci. Technol

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Mung bean sprouts are a popular health food both in China and worldwide. We determined the optimal concentration of exogenous methyl jasmonate (MeJA) for the promotion of the sprouting in mung beans (Vigna radiata). The 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) scavenging test showed that MeJA application resulted in significantly improved antioxidant capacity in the sprouts 72 h later. Measurement of total polyphenols in MeJA-treated beans from 0 to 168 h, using Folin-Ciocalteu colorimetry, showed that the polyphenols changing was significantly correlated with antioxidant activity. The main polyphenols isovitexin, kaempferol-3-O-rutinoside, daidzein, genistein, isoquercitrin, p-coumaric acid, and caffeic acid were quantified using high-performance liquid chromatography (HPLC/QqQ MS) and partial least squares discriminant analysis (PLS-DA). MeJA promoted the production of polyphenols, metabolites, and antioxidants in the sprouts; therefore, its use may allow sprouts to be prepared more quickly or increase their nutritional value.Keywords: mung beans sprouts; methyl jasmonate; antioxidants; polyphenols; metabolite pathway. Practical Application:We firstly studied the influences of MeJA on activities and metabolites of mung bean sprouts.

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Section: Dpph Radical Scavenging Activitymentioning

confidence: 99%

Increased antioxidant activity and polyphenol metabolites in methyl jasmonate treated mung bean (Vigna radiata) sprouts

Dong

Ren

et al. 2017

Food Sci. Technol

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“…From the methanolic extract of leaves, two new compounds, 1 and 2, were isolated together with a known flavanone, selinone. 14) On the other hand, from the stem extract, 2-7 were was thought to have a cis-stilbene skeleton. The nuclear Overhauser effect (NOE) correlation between the methoxyl group and two aromatic protons (δ: 6.32, 6.39) indicated that the methoxyl group is on the 1,3,5-trisubstituted aromatic ring.…”

Section: Resultsmentioning

confidence: 99%

New Leishmanicidal Stilbenes from a Peruvian Folk Medicine, <i>Lonchocarpus nicou</i>

Fuchino

Kiuchi

Yamanaka

et al. 2013

CHEMICAL & PHARMACEUTICAL BULLETIN

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Two new stilbenes, 1 and 2, were isolated as leishmanicidal constituents from the methanolic extract of Lonchocarpus nicou leaves and stem, together with five known stilbenes and rotenoids. Their chemical structures were determined by spectral methods. Among them, the cis stilbene-type compounds 1 and 4 showed potent leishmanicidal activity (IC50: 5.5, 3.9 µg/mL), while the trans stilbene-type compounds 2 and 5, and rotenoids 6 and 7, showed moderate activities (IC50: 9.9, 12.8, 22.6, 19.6 µg/mL, respectively).

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“…The compound skeleton vibration v C=C (1577, 1502, 1487 cm -1 ) and -CH 2 of plane bending vibration peak (750 cm -1 ), which in the complexes are almost not changed, indicating the useless of the benzene ring. Because the formation process of the complex and the occurrence of proton transfer, the peak of -NH-was changed [15,16] .…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Fluorescence Property of Novel Zn2+ Schiff Base Complex

Wang

Hou

et al. 2012

AMR

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The complex of ZnL2Cl4 was synthesized by using zinc chloride hydrate and ligand 2-[(4-Methylpiperazin-1-yl)iminomethyl]phenol(L) under reflux conditions and anhydrous ethanol as solvent. The complex was characterized by elemental analysis, Infrared spectroscopy, solid fluorescence. Experimental results showed that the free ligand was thermally stable, and emitted intensive blue fluorescence at the peak wavelength of 493 nm. Compared with the fluorescent emission of free ligand, the complex of ZnL2Cl4 is blue-shifted to 448 nm in solid-state and exhibiting stronger blue fluorescence.

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Synthesis of Hydroxystilbene Derivatives and their Antioxidant Activity by DPPH Method1

Cited by 10 publications

References 10 publications

Increased antioxidant activity and polyphenol metabolites in methyl jasmonate treated mung bean (Vigna radiata) sprouts

Increased antioxidant activity and polyphenol metabolites in methyl jasmonate treated mung bean (Vigna radiata) sprouts

New Leishmanicidal Stilbenes from a Peruvian Folk Medicine, <i>Lonchocarpus nicou</i>

Synthesis and Fluorescence Property of Novel Zn2+ Schiff Base Complex

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