Zea mays L. extracts modify glomerular function and potassium urinary excretion in conscious rats

Velazquez, D.V.O.; Xavier, Hanna Stephany Trajano; Batista, José E.; Castro-Chaves, Carmen

doi:10.1016/j.phymed.2003.12.010

Cited by 108 publications

(82 citation statements)

References 9 publications

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“…For identifycation purposes, the retention times of the sample analytes were compared to those of external standards under the same conditions, and the standards were co-chromatographed with the samples in order to confirm their identity. To the best of our knowledge, these results were never reported before, and the few published studies up to now about the composition of the maize silks have not reported the presence of lutein [20]. Moreover, it is important to consider the predominance of lutein in the ob- All values are presented as mean ± SEM of three extractions and three injections/sample; a n = 8 plants; n.d. = not detected.…”

Section: Resultsmentioning

confidence: 88%

Brazilian Maize Landraces Silks as Source of Lutein: An Important Carotenoid in the Prevention of Age-Related Macular Degeneration

Kuhnen¹,

Dias²,

Ogliari³

et al. 2012

FNS

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The carotenoid composition of the silk tissue of Zea mays (L.) has not been investigated despite its large occurrence in maize grains. For the purpose of evaluating maize silk as a source of carotenoids, samples from eight landraces developed and cultivated in Southern Brazil were assayed. The silk samples were harvested from individual plants through the fourth and seventh day after they emerged, frozen in liquid N 2 , and lyophilized. The carotenoids were extracted with a MeOH/toluene solution (1:1, v/v), 30 min, and saponified (15% KOH, 12 h, 40˚C). The RP-HPLC-UVvisible analysis revealed lutein as the main carotenoid (88.75%) in maize silks, with a wide range of contents (dry weight), i.e. 39.11 g·g −1 (Palha Roxa 18) to 176.12 g·g −1 (Língua de Papagaio) among the studied genotypes.Smaller amounts of trans-β-carotene, -carotene, and zeaxanthin were also detected. The results revealed that in parallel to the claimed high genetic variability of maize landraces, a quite variable carotenoidic composition of silk tissue seems to occur in the germoplasm cultivated in Southern Brazil. Taking into account the usage of lutein for the prevention of several pathologies, especially the age related macular degeneration, some maize landraces (e.g. Língua de Papagaio and Rosado) might be interesting sources of a lutein-rich extract that could add value to an underutilized biomass.

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Section: Resultsmentioning

confidence: 88%

Brazilian Maize Landraces Silks as Source of Lutein: An Important Carotenoid in the Prevention of Age-Related Macular Degeneration

Kuhnen¹,

Dias²,

Ogliari³

et al. 2012

FNS

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“…The mechanism of action may be related to the fact that it soothes and relaxes the lining of the bladder and urinary tubules, thereby reducing irritation and increasing urine secretion (16). The use of CS in traditional medicine has also showed that it has anti-fatigue, antidepressant and kaliuretic activities (15,17,18). In addition to these properties, CS possesses excellent antioxidant activity (7,19) and demonstrated radiation-protective as well as nephroprotective effects (20,21).…”

Section: Discussionmentioning

confidence: 99%

Cardiotoxicity Study of the Aqueous Extract of Corn Silk in Rats

Adedapo

Babarinsa

Oyagbemi

et al. 2016

Macedonian Veterinary Review

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Original Scientific Article Mac Vet Rev 2016; 39 (1): 43-49 In the ear of corn there are silky strands which run its length and these strands are known as corn silks. Folk remedies show that the corn silks have been used as an oral antidiabetic agent in China for many years and as herbal tea in other world nations for the amelioration of urinary tract infection. The extract is being assessed for safety in this study using histopathological changes, as well as an electrocardiogram (ECG). Graded doses (200, 400 and 800 mg/kg) of aqueous CS extract were administered to rats for seven days. The fourth group which served as control received 3 ml/kg dose of distilled water. On the eighth day, ECG was evaluated in ketamine/xylazine-induced anaesthesia in rats to determine changes in the heart rate, P-wave duration, P-R interval, R-amplitude, QRS duration, QT interval and QTc. Hearts from the experimental animals were collected for histopathological changes. The results showed that there was a significant change in the heart rate (groups B and C), P-wave duration (group D), QT interval (groups B, C and D) and QTc (groups B, C and D) when compared to the control group. Histology also indicated that sections of the heart showed fatty infiltration of infl amed heart and areas of moderate inflammation of the atrium and ventricle. It could therefore be concluded from this study that though folklore indicated that corn silk (CS) is of high medicinal value, one must be careful in using this product as medicinal agent especially in patients with compromised heart conditions.

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“…Rambut jagung dapat dimanfaatkan di bidang kesehatan, diantaranya sebagai antioksidan (Guo, Liu, Han, & Liu, 2009), memiliki efek diuretik (Velazquez, Xavier, Batista, & de Castro-Chaves, 2005), menurunkan hiperglikemik (Farsi et al, 2008), antidepresi (Ebrahimzadeh, Pourmorad, & Hafezi, 2008) dan antidiabetes (Feng, Wang, Tao, & Zhou, 2011). Feng, Wang, Tao, Zhou, & Zhong (2012 …”

Section: Pendahuluanunclassified

UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL, ETIL ASETAT DAN PETROLEUM ETER RAMBUT JAGUNG MANIS (Zea mays ssaccarata Strurt) TERHADAP BAKTERI Staphylococcus Aureus DAN Escherichia coli

Jannah¹,

Rachmawaty²,

Maunatin³

2017

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Sweet corn silk contains active compounds which act as an antibacterial. In this study, sweet corn silk extract was determined antibacterial activity in various solvents, Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC). Extraction of sweet corn silk was conducted by maceration method. Antibacterial activity was tested with the disc diffusion method, then followed by MIC and MBC tests at 250; 125; 62.5; 31.25 and 15.625 mg/mL using liquid dilution method and drop plate method. The result showed that its inhibition zone against bacteria E. coli and S. aureus was 19.3 and 13 mm for ethanol extract, 9.3 and 12.3 mm for ethyl acetate extract, while the petroleum ether extract is also inhibited E.coli with its inhibition zone 2.67 mm but has no antibacterial activity on S. aureus. Ethanol extract had the MIC to E. coli and S. aureus was 125 mg/mL, while MBC was 250 mg/mL.

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Zea mays L. extracts modify glomerular function and potassium urinary excretion in conscious rats

Cited by 108 publications

References 9 publications

Brazilian Maize Landraces Silks as Source of Lutein: An Important Carotenoid in the Prevention of Age-Related Macular Degeneration

Brazilian Maize Landraces Silks as Source of Lutein: An Important Carotenoid in the Prevention of Age-Related Macular Degeneration

Cardiotoxicity Study of the Aqueous Extract of Corn Silk in Rats

UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL, ETIL ASETAT DAN PETROLEUM ETER RAMBUT JAGUNG MANIS (Zea mays ssaccarata Strurt) TERHADAP BAKTERI Staphylococcus Aureus DAN Escherichia coli

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