Flavonoids of four malvaceous plants

Subramanian, S.Sankara; Nair, A.G.R.

doi:10.1016/s0031-9422(00)90132-8

Cited by 35 publications

(15 citation statements)

References 4 publications

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“…Considering the 22 standard compounds used for optimizing the method, 16 compounds were identified unequivocally (included gallic acid, protocatechuic acid, catechin, chlorogenic acid, vanillic acid, caffeic acid, syringic acid, quininic acid, p-coumaric acid, ferulic acid, rutin, luteolin, quercetin, naringenin, apiolin, and compound 1) from the five parts (roots, stems, leaves, seeds, and exocarps) of A. theophrasti Medic., as demonstrated in Table 2. Except for the compounds confirmed by standards, there were other two groups of constituents in crude extracts from the five parts, one group identified tentatively by literatures [3,6,20,[24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39], detail information for the group of compounds was listed in Table 3. It can been seen that a great many of compounds were identified from the five parts of A. theophrasti Medic., specifically 14 compounds in the roots, 12 in the stems, 14 in the leaves, 7 in the seeds and 26 in the exocarps.…”

Section: Identification Of Componentsmentioning

confidence: 99%

Accuracy mass screening and identification of phenolic compounds from the five parts of Abutilon theophrasti Medic. by reverse‐phase high‐performance liquid chromatography‐electrospray ionization‐quadrupoles‐time of flight‐mass spectrometry

Tian

Wang²,

Shen³

et al. 2012

J of Separation Science

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A rapid and resolutive reverse-phase high-performance liquid chromatography-electrospray ionization-quadrupoles-time of flight-mass spectrometry method was established for the screening and identification of the phenolic compounds in the 70% ethanolic extracts from the five parts (roots, stems, leaves, seeds, and exocarps) of Abutilon theophrasti Medic.. Separation and detection conditions were optimized by using a 22 mixing standard, which included phenolic acids, flavonoids and a naphthalene compound. Optimum LC separation was achieved on a C(18) analytical column (250 mm x 4.6 mm id, 5 μm) by gradient elution with water containing 0.1% v/v formic acid (pH 2.4) and acetonitrile as mobile phases, at a flow rate of 1.0 mL/min. The developed method was applied to the study on the constituents of A. theophrasti Medic., and 16 compounds were unequivocally identified with standards. Meanwhile, 37 constituents were tentatively identified by comparing with references. In addition, accurate molecular formulae were conjectured for unknown compounds. To our knowledge, little is known about how these compounds are distributed in A. theophrasti Medic.. Hence, it is clear that the comprehensive analysis of the phenolic compounds of A. theophrasti Medic. is helpful for the quality control and understanding the usage and function of the herb and its products.

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Section: Identification Of Componentsmentioning

confidence: 99%

Accuracy mass screening and identification of phenolic compounds from the five parts of Abutilon theophrasti Medic. by reverse‐phase high‐performance liquid chromatography‐electrospray ionization‐quadrupoles‐time of flight‐mass spectrometry

Tian

Wang²,

Shen³

et al. 2012

J of Separation Science

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“…The pigments of the calyces of plants grown in Trinidad were examined by Du and Francis (1973), who also isolated delphinidin-3-sambubioside (major component), delphinidin-3-monoglucoside and cyanidin-3-monoglucoside, but, in addition, characterized cyanidin-3-sambubioside ( Figure 1, 2) as the second most abundant anthocyanin in the extract. Subramanian and Nair (1972) studied the pigments present in H. sabdariffa var. altissima and reported the presence of cyanidin-3, 5-diglucoside and cyanidin-3-(2 Gglucosylrutinoside).…”

Section: Constituentsmentioning

confidence: 99%

“…In 1961, Seshadri and Thakur isolated gossytrin from the flower petals of H. sabdariffa, which they showed to be gossypetin-3-glucoside. Subramanian and Nair (1972) reported the isolation of gossypetin-8-glucoside, gossypetin-7-glucoside and gossypetin-3-glucoside from H. sabdariffa var. altissima.…”

Section: Constituentsmentioning

confidence: 99%

Phytochemical, pharmacological and toxicological aspects ofHibiscus sabdariffa L.: a review

Ali¹,

Al-Wabel²,

2005

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This article reviews the reported phytochemical, pharmacological and toxicological properties of Hibiscus sabdariffa L. (English: roselle, red sorrel; Arabic: karkade), the calyces of which are used in many parts of the world to make cold and hot drinks. Nutritionally, these contain ascorbic acid (vitamin C). In folk medicine, the calyx extracts are used for the treatment of several complaints, including high blood pressure, liver diseases and fever. The pharmacological actions of the calyx extracts include strong in vitro and in vivo antioxidant activity. In rats and rabbits, the extract showed antihypercholesterolaemic, antinociceptive and antipyretic, but not antiinflammatory activities. In rat and man a strong antihypertensive action has been demonstrated. The effects of the calyx extracts on smooth muscles in vitro are variable, but they mostly inhibit the tone of the isolated muscles. In healthy men, consumption of H. sabdariffa has resulted in significant decreases in the urinary concentrations of creatinine, uric acid, citrate, tartrate, calcium, sodium, potassium and phosphate, but not oxalate. Oil extracted from the plant's seeds has been shown to have an inhibitory effect on some bacteria and fungi in vitro. The plant extracts are characterized by a very low degree of toxicity. The LD50 of H. sabdariffa calyx extract in rats was found to be above 5000 mg/kg. A single report has suggested that excessive doses for relatively long periods could have a deleterious effect on the testes of rats. In view of its reported nutritional and pharmacological properties and relative safety, H. sabdariffa and compounds isolated from it (for example, anthocyanins and Hibiscus protocatechuic acid) could be a source of therapeutically useful products.

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“…In the present study, we report on a series of data collected from a polymorphic (red-flowered or whiteflowered) population of Musk Mallow (Malva moschata, Malvaceae) in upstate New York over two field seasons. Floral color variation in this species is the result of differential flavonoid expression (Bate-Smith & Swain 1962;Harborne 1967), in particular, cyanidin, kaempferol and quercetin glycosides (Subramanian & Nair 1972;Takeda et al 1989;Matlawska & Sikorska 2004). In addition to coloration, these pigments have many direct and indirect functions in plants (Harborne 1976(Harborne , 1988(Harborne , 1991Shirley 1996).…”

Section: Introductionmentioning

confidence: 99%

Floral color variation and associations with fitness‐related traits inMalva moschata(Malvaceae)

Frey

Dunton

Garland

2011

Plant Species Biology

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Genetic polymorphisms for floral color are interesting phenomena to study because they are likely to be maintained by opposing selective forces. Pollinator preferences may exert direct selection on floral color; however, floral color might also be the indirect target of selection through genetic associations with other traits under selection. Malva moschata (Malvaceae) is a North American species that produces either red or white flowers. In the present study, we present reflectance spectrophotometry data that characterize the nature of floral color variation in this species and show that honey bees and bumble bees should be able to distinguish between the morphs through differential sensitivity at the green (long-wavelength) photoreceptor. Second, we use a series of phenotypic measures to investigate whether the color morphs differ with respect to other floral traits, vegetative traits or female reproductive success, and use a series of correlation analyses to infer the relative independence of color from these other traits. We found that red-flowered morphs produced more anthers per flower and had greater leaf area, and that whiteflowered morphs had greater percentage fruit set; however, there were no reproductive success differences between the morphs. The relationship between flower size and anther number was the only correlation that differed between the morphs. Finally, a series of pollinator-choice experiments showed that bumble bees strongly prefer red morphs in terms of visit frequency and duration, but honey bees have no preference. Taken together, our results suggest that color is rather independent of other phenotypic traits, and that honey bee abundance is likely to play a role in maintaining color variation in this system.

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Flavonoids of four malvaceous plants

Cited by 35 publications

References 4 publications

Accuracy mass screening and identification of phenolic compounds from the five parts of Abutilon theophrasti Medic. by reverse‐phase high‐performance liquid chromatography‐electrospray ionization‐quadrupoles‐time of flight‐mass spectrometry

Accuracy mass screening and identification of phenolic compounds from the five parts of Abutilon theophrasti Medic. by reverse‐phase high‐performance liquid chromatography‐electrospray ionization‐quadrupoles‐time of flight‐mass spectrometry

Phytochemical, pharmacological and toxicological aspects ofHibiscus sabdariffa L.: a review

Floral color variation and associations with fitness‐related traits inMalva moschata(Malvaceae)

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