Anticough and antimicrobial activities of Psidium guajava Linn. leaf extract

Jaiarj, Pranee; Khoohaswan, Paranee; Wongkrajang, Yuvadee; Peungvicha, Penchom; Suriyawong, Potjanee; Saraya, M.L. Sumal; Ruangsomboon, Onlak

doi:10.1016/s0378-8741(99)00022-7

Cited by 192 publications

(112 citation statements)

References 4 publications

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“…16,18,19,21,26,27 The binding behavior of the P. guajava extract was comparable to tannic acid and catechin, as observed in Figure 1.…”

Section: Resultsmentioning

confidence: 71%

“…13 Other main factors determining the polyphenolics-PVPP reaction include chemical features of the polyphenol molecule (number of hydroxyl groups, isomers and conformation features) as well as the pH, temperature and ionic strength of the reaction milieu. 5,11,12,[14][15][16] This work was designed to evaluate systematically analytical variables related to the binding reaction between PVPP and the reference substances, gallic acid, tannic acid, catechin and pyrogallol. Complementary, an aqueous extract from Psidium guajava leaves was included as a model plant extract.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Specificity of Cross-Povidone (PVPP) as binding agent in the quantification of polyphenolic compounds

Verza¹,

Pavei²,

Ortega³

2008

J. Braz. Chem. Soc.

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O polímero polivinilpirrolidona (PVPP) proporciona uma alternativa analítica ao invés do pó-de-pele e caseína, como um agente complexante na quantificação de taninos. Neste trabalho foi estudado a especificidade do PVPP em complexar com compostos polifenólicos, na presença de rutina. Os ácidos gálico e tânico, catequina e pirogalol foram utilizados como substâncias de referência (PRS), junto com o extrato aquoso das folhas do Psidium guajava L. A especificidade da complexação foi avaliada pelo método espectrofotométrico e por cromatografia líquida de alta eficiência (CLAE) com arranjo de diodos (DAD). As análises para a mistura das PRS e rutina, demonstraram claramente que a complexação com PVPP não é uma reação específica e independe da quantidade de polímero utilizada. As análises por CLAE-DAD do extrato de Psidium guajava revelaram picos característicos de flavonóides, além de catequina e ácido gálico. Todos os picos destes flavonóides, catequina e ácido gálico decresceram quando adicionou-se o PVPP. Isto confirma a falta de especificidade. Desde que a ligação PVPP-polifenóis depende de características estruturais particulares, a extensão desses resultados a outras espécies vegetais deve ser evitada.Cross-povidone, or polyvinylpyrrolidone (PVPP) affords an analytical alternative instead of hide-powder and casein as binding agent in the content assay of vegetable tannins. In this work we studied the specificity of PVPP to bind polyphenolics in the presence of flavonoids. Gallic acid, tannic acid, catechin and pyrogallol were used as polyphenolic reference substances (PRS), along with an aqueous extract from Psidium guajava L. leaves. The binding specificity was assayed by UV-Vis and High Performance Liquid Chromatography-Photodiode array (HPLC-PDA) methods. The analyses of PRS-rutin mixtures showed clearly that PVPP binding is a non-specific reaction, unrelated to the amount of PVPP used. HPLC-PDA analysis revealed peaks which could be characterized as flavonoids in the Psidium guajava extract, beside catechin and gallic acid. All these flavonoids, catechin and gallic acid peaks decreased as PVPP was added; this confirms the lack of specificity. Since the polyphenolic-PVPP reaction depends on specific structural features, any extensive conclusion should be avoided.

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“…16,18,19,21,26,27 The binding behavior of the P. guajava extract was comparable to tannic acid and catechin, as observed in Figure 1.…”

Section: Resultsmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Study of the Specificity of Cross-Povidone (PVPP) as binding agent in the quantification of polyphenolic compounds

Verza¹,

Pavei²,

Ortega³

2008

J. Braz. Chem. Soc.

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“…Review of literature showed that solvents in the extraction would destroy cellular membrane and dissolve pigments (Shidduraju & Becker, 2003;Ra et al, 1998;Kahkonen et al, 1999). Non-polar solvent, such as n-heksan, was effective to dissolve alkaloid in the alkali form (Jaiarj et al, 1999;Sosa et al, 2010). Semi-polar solvent, such as ethyl acetate, was able to extract phenol and terpenoid compounds, while polar solvent, like methanol, was able to extract quarterner alkaloid compound, phenolic component, carotenoid and tannin (Harborne, 2006).…”

Section: Discussionmentioning

confidence: 99%

The Identification of Chemical Compound and Antibacterial Activity Test of Kopasanda (Chromolaena Odorata L.) Leaf Extract Against Vibriosis-Causing Vibrio harveyi (MR 275 Rif) on Tiger Shrimp

Harlina¹,

Prajitno²,

Suprayitno

et al. 2013

AST

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Kopasanda (Chromolaena odorata L.) R.M King and H. Rob were classified as blossoming bush species in the Asteraceae family. An empirical study showed that kopasanda (C. odorata L.) leaf had been used by the embankment farmers at South Sulawesi Province to eradicate Vibriosis which caused death for tiger prawn (P.monodon Fabr.). The objective of research was to understand the bioactive compound that was contained within kopasanda (C. odorata L.) leaf extract and its antibacterial activity against V. harveyi. Result of

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“…are used to treat various diseases (e.g., scurvy, 17 cough, and lung diseases 18 ) and as anti-inflammatory and hemostatic agents. 19,20 In addition, plants belonging to this species decrease the metastasis of cancer cells. 21 Psidium cattleianum leaf extract has demonstrated antimicrobial activity and inhibits the growth o f m i c r o o r g a n i s m s s u c h a s S t r e p t o c o c c u s mutans, Por phyromonas gingivalis, Prevotella intermedia, Fusobacterium nucleatum, Actinobacillus actinomycetemcomitans, and E. faecalis, 22 killing S. mutans when applied at high concentrations or reducing lactic acid production when used at low concentrations.…”

Section: Introductionmentioning

confidence: 99%

Calcium hydroxide associated with a new vehicle: Psidium cattleianum leaf extracts. Tissue response evaluation

et al. 2017

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The aim of this study was to evaluate edemogenic activity and subcutaneous inflammatory reaction induced by Psidium cattleianum leaf extracts associated with Ca(OH) 2 . Thirty male Wistar rats, split equally into three groups [aqueous extract + Ca(OH) 2 ; ethanolic extract + Ca(OH) 2 ; and propylene glycol + Ca(OH) 2 ], were assessed every 3 h or 6 h (five animals in each period). Under general anesthesia, 0.2 mL of 1% Evans blue per 100 g of body weight was injected into the penile vein and each combination to be evaluated was subcutaneously injected into the dorsal region 30 min thereafter. Edemogenic activity was analyzed by spectrophotometry (λ=630 nm). For inflammatory reaction analysis, 50 rats received four polyethylene tubes (three experimental groups) and an empty tube (control group). The assessments were made at 7, 15, 30, 60, and 90 days, followed by hematoxylin-eosin staining and by the assignment of scores for evaluation of tissue response intensity. Ethanolic extract + Ca(OH) 2 yielded the largest edemogenic activity at 3 h. Intergroup differences at 6 h were not significant. The histological analysis showed progressive repair over time (p<0.05) and aqueous and ethanolic extracts produced similar responses to those of the control and Ca(OH) 2 + propylene glycol groups. Psidium cattleianum leaf extracts used as Ca(OH) 2 vehicles evoked similar tissue response when compared to Ca(OH) 2 associated with propylene glycol.

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Anticough and antimicrobial activities of Psidium guajava Linn. leaf extract

Cited by 192 publications

References 4 publications

Study of the Specificity of Cross-Povidone (PVPP) as binding agent in the quantification of polyphenolic compounds

Study of the Specificity of Cross-Povidone (PVPP) as binding agent in the quantification of polyphenolic compounds

The Identification of Chemical Compound and Antibacterial Activity Test of Kopasanda (Chromolaena Odorata L.) Leaf Extract Against Vibriosis-Causing Vibrio harveyi (MR 275 Rif) on Tiger Shrimp

Calcium hydroxide associated with a new vehicle: Psidium cattleianum leaf extracts. Tissue response evaluation

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