OBJECTIVETo establish a RP-HPLC method for the determination of four acids compounds including gallic acid, protocatechuic acid, corilagin and ellagic acid in Erodium Stephanianum.

METHODThe RP-HPLC separation was performed on an Agilent TC-C18 analytical column (4.6 mm x 250 mm, 5 microm). The mobile phase was methanol (A) -water containing 0.4% H3PO4 (B) with gradient elution mode at the flow rate of 0.8 mL x min(-1). The detection wavelength was set at 259 nm, and the column temperature was 30 degrees C.

RESULTThe liner ranges of gallic acid, protocatechuic acid, corilagin and ellagic acid were 0.059-2.360 g x L(-1) (r = 0.999 6), 0.017-0.672 g x L(-1) (r = 0.999 9), 0.351-14.040 g x L(-1) (r = 0.999 9), and 0.151-6.040 g x L(-1) (r = 0.999 8), respectively. The average recoveries (n = 3) were 99.45% (RSD 1.5%), 98.65% (RSD 1.7%), 100.3% (RSD 2.0%), and 98.90% (RSD 1.2%), respectively.

CONCLUSIONThe method is simple and accurate with a good reproducibility and can be used for quality control of Erodium stephanianum.

Chromatography, High Pressure Liquid ; methods ; Ellagic Acid ; analysis ; Gallic Acid ; analysis ; Geraniaceae ; chemistry ; Glucosides ; analysis ; Hydrolyzable Tannins ; Hydroxybenzoates ; analysis

The effect of methanolic extract of cashewnut (Anacardium occidentale) shell extract was seen on conidial germination of Erysiphe pisi and powdery mildew development in pea (Pisum sativum). Maximum conidial germination inhibition of E. pisi on glass slides was observed at 300 ppm. Similar effect on floated pea leaves was observed after 48 h at the same concentration. Conidial germination on intact untreated pea leaves was also assessed on II and IV nodal leaves while IV and II nodal leaves were treated with the extract and vice versa. There was tremendous reduction in conidial germination on all the nodal leaves. The disease intensity of pea powdery mildew was significantly reduced by methanolic extract of cashewnut shells. Maximum reduction was observed with 200 ppm where 39% disease intensity was recorded in comparison to 96.53% in the control. The phenolic acid content of pea leaves following treatments with this extract varied and no definite pattern was observed. Out of several phenolic compounds, namely, gallic, ferulic, chlorogenic, and cinnamic acids, only gallic acid was found to be present consistently in all the treatments with varied amounts.
Anacardium ; Gallic Acid ; Germination ; Glass ; Hydroxybenzoates ; Methanol ; Peas ; Phenol

OBJECTIVETo explore potency material bases of Xuebijing (XBJ) formula, and to analyze its effects at the molecular network level.

METHODSTotally 16 sepsis-related targets were selected and classified into three categories such as inflammation, immune, and coagulation referring to biological roles. Then molecular database of chemical compositions in XBJ formula were constructed to explore mutual actions with inflammation, immune, and coagulation targets.

RESULTSDanshen root and safflower, with more effector molecules with immune and coagulation targets, have extensive anticoagulation and anti-inflammation effects. The former 10 molecules with better mutual actions with sepsis targets were sequenced as tryptophane, danshensu, gallic acid, salvianolic acid D, protocatechuic acid, salvianolic acid A, danshensu C, vanillic acid, rosmarinic acid, phenylalanine. There existed two phenomena in XBJ formula as follows. One component had stronger actions with multi-targets, for example, danshensu had actions with 13 targets. Meanwhile, different components acted on the same target protein, for example, 8 molecules acted with MD-2.

CONCLUSIONXBJ formula had certain potential synergistic effects with sepsis targets, which could provide certain referential roles for findina new type anti-septic drugs.

Caffeic Acids ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; therapeutic use ; Gallic Acid ; Hydroxybenzoates ; Inflammation ; Lactates ; Sepsis ; drug therapy

To study the chemical constituents of Drynariae Rhizoma, nine phenolic acids were isolated from a 70% ethanol extract by using a combination of various chromatographic techniques including column chromatography over silica gel, ODS, Sephadex LH-20, and semi-preparative HPLC. By spectroscopic techniques including 1H NMR, 13C NMR, 2D NMR, and HR-ESI-MS, these compounds were identified as 4, 4'-dihydroxy-3, 3'-imino-di-benzoic acid (1), protocatechuic acid (2), gallic acid (3), p-hydroxybenzoic acid (4), (E)-caffeic acid (5), ethyl trans-3, 4-dihydroxycinnamate (6), caffeic acid 4-O-beta-D-glucopyranoside (7), p-coumaric acid 4-O-beta-D-glucopyranoside (8), and 23(S)-12-O-caffeoyl-12-hydroxyllauric acid glycerol ester (9), separately. Among them, 1 and 9 are new compounds, and 3, 4, and 6 were isolated from Drynaria species for the first time.
Benzoates ; chemistry ; isolation & purification ; Caffeic Acids ; chemistry ; isolation & purification ; Cinnamates ; chemistry ; isolation & purification ; Gallic Acid ; chemistry ; isolation & purification ; Glycerol ; analogs & derivatives ; chemistry ; isolation & purification ; Hydroxybenzoates ; chemistry ; isolation & purification ; Imines ; chemistry ; isolation & purification ; Lauric Acids ; chemistry ; isolation & purification ; Molecular Conformation ; Molecular Structure ; Parabens ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Polypodiaceae ; chemistry ; Rhizome ; chemistry

We evaluated the antioxidant activity and tyrosinase inhibitory effects of Pleurotus ostreatus fruiting bodies extracted with acetone, methanol, and hot water. The antioxidant activities were tested against beta-carotene-linoleic acid, reducing power, 1,1-diphenyl-2-picrylhydrazyl free radical scavenging activity, and ferrous chelating ability. Furthermore, phenolic acid and flavonoid contents were also analyzed. The methanol extract showed the strongest beta-carotene-linoleic acid inhibition as compared to the other exracts. The acetone extract (8 mg/mL) showed a significantly high reducing power of 1.54 than the other extracts. The acetone extract was more effective than other extracts for scavenging on 1,1-diphenyl-2-picrylhydrazyl radicals. The strongest chelating effect (85.66%) was obtained from the acetone extract at 1.0 mg/mL. The antioxidant activities of the extracts from the P. ostreatus fruiting bodies increased with increasing concentration. A high performance liquid chromatography analysis detected seven phenolic compounds, including gallic acid, protocatechuic acid, chlorogenic acid, naringenin, hesperetin, formononetin, and biochanin-A in an acetonitrile and 0.1 N hydrochloric acid (5 : 1) solvent extract. The total phenolic compound concentration was 188 microg/g. Tyrosinase inhibition of the acetone, methanol, and hot water P. ostreatus extracts increased with increasing concentration. The results revealed that the methanol extract had good tyrosinase inhibitory ability, whereas the acetone and hot water extracts showed moderate activity at the concentrations tested. The results suggested that P. ostreatus may have potential as a natural antioxidant.
Acetone ; Acetonitriles ; Biphenyl Compounds ; Chlorogenic Acid ; Chromatography, Liquid ; Flavanones ; Fruit ; Gallic Acid ; Hesperidin ; Hydrochloric Acid ; Hydroxybenzoates ; Isoflavones ; Methanol ; Monophenol Monooxygenase ; Phenol ; Picrates ; Pleurotus ; Water

BACKGROUND AND OBJECTIVES: Salicylates are well-known for producing reversible hearing loss and tinnitus. However, the site and mechanism of salicylate ototoxicity remain unresolved. Recent experiments suggest that reversible biochemical and/or metabolic changes in the cochlea seem to play an important role in salicylate ototoxicity. The purpose of this study was to investigate the site of lesion in salicylate ototoxicity by audiometric study. MATERIALS AND METHOD: ABRs and DPOAEs were observed after intraperitoneal injection of 500 mg/kg of sodium salicylate on 24 ears of guinea pigs. RESULTS: Salicylate produced a significant increase in the ABR threshold. Maximum changes were obtained in 4 hours, and recovered to the baseline in 24 hours after salicylate administration. The pattern of hearing loss shown by latency-intensity function was compatible with the cochlear type of hearing loss. The echo amplitude on DPOAEs at f2=2002, 4004 Hz was significantly decreased at 2, 4, 6, 8 hours, and returned to the baseline in 24 hours after salicylate administration. The time course of the change of DPOAEs was parallel with that of ABRs. CONCLUSION: These results reflect that the cochlear outer hair cells may be the main site of lesion in salicylate ototoxicity.
Animals ; Audiometry ; Cochlea ; Ear ; Guinea Pigs* ; Guinea* ; Hair ; Hearing Loss ; Injections, Intraperitoneal ; Salicylates ; Sodium Salicylate ; Tinnitus

A new phenolic acid ester, 4'-hydroxyphenylethyl 4,8(R)-dihydroxyphenylpropionate(1), was isolated from an endophytic fungus Colletotrichum capsici of Paeonia lactiflora roots, along with eight known phenolic derivatives, tyrosol(2), 2-(4-hydroxyphenyl) ethyl acetate(3), methyl p-hydroxyphenylacetate(4), methyl m-hydroxyphenylacetate(5), 4-(4-hydroxyphene-thoxy)-4-oxobutanoic acid(6), 4-hydroxyphenethyl methyl succinate(7), trichodenol B(8) and 4-hydroxyphenethyl 2-(4-hydroxyphenyl) acetate(9). Their structures were identified by a combination of high-resolution electrospray ionization mass spectrometry(HR-ESI-MS), nuclear magnetic resonance(NMR) spectroscopy, ultraviolet(UV) spectroscopy and electronic circular dichroism(ECD) spectroscopy. Compounds 2-9 were isolated from this fungus for the first time.
Colletotrichum ; Esters ; Hydroxybenzoates ; Paeonia

Eighteen compounds were isolated by a combination of various chromatographic techniques including column chromatography over macroporous resin, MCI gel, silica gel, and sephadex LH-20 and reversed-phase HPLC. Their structures were elucidated by spectroscopic data analysis as adinoside A (1), stryspinoside (2), benzyl alcohol beta-glucopyranoside (3), benzyl 2-o-beta-D-glucopyranosyl-2,6-dihydroxybenzoate (4) , gentisic acid 2-O-beta-D-glucopyranoside (5), eugenyl beta-D-glucopyranoside (6) , eugenyl-P-xylopyranosyl-(1-->6)-beta-glucopyranoside (7), (-)-lyoniresinol 9-O-fP-D-glucopyranoside (8) , (+)-lyoniresinol 9-O-beta-D-glucopyranoside (9) , apigenin-7-O-L-rhamnopyranoside (10), luteolin-3 '-O-L-rhamnoside (11) , ursolic acid (12) , beta-sitosteryl-3beta-glucopyranoside-6'-O-palmitate (13), abscisic acid (14), guanosine (15), 5-methyluracil (16), trans-cinnamic acid (17), and 4-hydroxybenzaldehyde(18). These compounds were obtained from this plant for the first time.
Benzaldehydes ; analysis ; Flowers ; chemistry ; Gentisates ; analysis ; Glucosides ; analysis ; Hydroxybenzoates ; analysis ; Lonicera ; chemistry ; Luteolin ; analysis ; Thymine ; analysis ; Triterpenes ; analysis

OBJECTIVETo establish the qualitative and quantitative detective methods of Herba Polygoni Orientalis.

METHODIsorientin, orientin, protocatechuic acid and gallic acid in Herba Polygoni Orientalis were identified by TLC. The contents of isorientin and orientin in Herba Polygoni Orientalis were determined by HPLC.

RESULTIsorientin, orientin, protocatechuic acid and gallic acid could be identified by TLC. Isorientin and orientin were well separated with Diamonsil C18 column and acetonitrile-0.1% phosphoric acid (18:82) as mobile phase. The linear range of isorientin was 0.075-0.90 microg. The average recovery of isorientin was 98.8% and RSD was 2.1%. The linear range of orientin was 0.041-0.49 microg. The average recovery of orientin was 98.8% and RSD was 2.1%.

CONCLUSIONThe methods can be used for qualitative identification and quantitation determination of Herba Polygoni Orientalis.

Chromatography, High Pressure Liquid ; Chromatography, Thin Layer ; Flavonoids ; analysis ; Gallic Acid ; analysis ; Glucosides ; analysis ; Hydroxybenzoates ; analysis ; Luteolin ; analysis ; Plants, Medicinal ; chemistry ; Polygonum ; chemistry ; Quality Control ; Reproducibility of Results

OBJECTIVETo study the chemical constituents of the essential substance from Polygonum oriental.

METHODCompounds were isolated with silica gel and polyamide chromatography and their structures were determined by spectral analysis and chemical evidence.

RESULTSix compounds were obtained and identified as myricitrin, luteolin, gallic acid, catechin, protocatechuic acid, p-hydroxycinnamic acid.

CONCLUSIONSix compounds were isolated from P. oriental for the first time.

Flavonoids ; chemistry ; isolation & purification ; Gallic Acid ; chemistry ; isolation & purification ; Hydroxybenzoates ; chemistry ; isolation & purification ; Luteolin ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Polygonum ; chemistry