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Psidium guajava

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https://www.readbyqxmd.com/read/29455277/guava-psidium-guajava-l-cv-red-suprema-crude-extract-protect-human-dermal-fibroblasts-against-cytotoxic-damage-mediated-by-oxidative-stress
#1
José M Alvarez-Suarez, Francesca Giampieri, Massimiliano Gasparrini, Luca Mazzoni, Tamara Y Forbes-Hernández, Sadia Afrin, Maurizio Battino
We analyzed guava fruits (Psidium guajava L. cv. Red Suprema) from Cuba to determine their chemical composition, total antioxidant capacity, as well as their protective effect against oxidative damage using an in vitro model of human dermal fibroblasts. The guava fruit is a natural source of bioactive compounds, such as polyphenols, vitamin C, folates and beta carotenes with proven health benefits. Human dermal fibroblasts were pre-incubated with different concentrations of guava crude extract and then subjected to oxidative stress using the AAPH stressor...
February 17, 2018: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/29433206/lycopene-rich-extract-from-red-guava-psidium-guajava-l-displays-cytotoxic-effect-against-human-breast-adenocarcinoma-cell-line-mcf-7-via-an-apoptotic-like-pathway
#2
Raimunda C Dos Santos, Alicia S Ombredane, Jéssica Maria T Souza, Andreanne G Vasconcelos, Alexandra Plácido, Adriany das G N Amorim, Eder Alves Barbosa, Filipe C D A Lima, Cristina D Ropke, Michel M M Alves, Daniel D R Arcanjo, Fernando A A Carvalho, Cristina Delerue-Matos, Graziella A Joanitti, José Roberto de S A Leite
This study investigated a lycopene-rich extract from red guava (LEG) for its chemical composition using spectrophotometry, mass spectrometry, attenuated total reflectance-fourier transform infrared spectroscopy (ATR-FTIR), and computational studies. The cytotoxic activity of LEG and the underlying mechanism was studied in human breast adenocarcinoma cells (MCF-7), murine fibroblast cells (NIH-3T3), BALB/c murine peritoneal macrophages, and sheep blood erythrocytes by evaluating the cell viability with 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method and flow cytometry...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29433194/uplc-qtof-ms-profiling-of-two-psidium-species-and-the-in-vivo-hepatoprotective-activity-of-their-nano-formulated-liposomes
#3
Fatema R Saber, Ghada A Abdelbary, Maha M Salama, Dalia O Saleh, Magda M Fathy, Fathy M Soliman
Liver diseases are major health problem in Egypt influencing lifestyle and economy. The demand for nutraceutical hepatoprotective agents is crucial to ameliorate the side effects of synthetic drugs. The present study aims to evaluate antioxidant and hepatoprotective activities of extracts of Psidium guajava L. and Psidium cattleianum Sabine leaves and their nano-formulated liposomes against paracetamol-induced liver damage in rats. Secondary metabolites profile of P. guajava and P. cattleianum leaves was investigated using UPLC-PDA-ESI-qTOF-MSn...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29407781/use-of-glm-approach-to-assess-the-responses-of-tropical-trees-to-urban-air-pollution-in-relation-to-leaf-functional-traits-and-tree-characteristics
#4
Arideep Mukherjee, Madhoolika Agrawal
Responses of urban vegetation to air pollution stress in relation to their tolerance and sensitivity have been extensively studied, however, studies related to air pollution responses based on different leaf functional traits and tree characteristics are limited. In this paper, we have tried to assess combined and individual effects of major air pollutants PM 10 (particulate matter ≤ 10 µm), TSP (total suspended particulate matter), SO 2 (sulphur dioxide), NO 2 (nitrogen dioxide) and O 3 (ozone) on thirteen tropical tree species in relation to fifteen leaf functional traits and different tree characteristics...
February 1, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29355095/beneficial-effects-of-consumption-of-acerola-cashew-or-guava-processing-by-products-on-intestinal-health-and-lipid-metabolism-in-dyslipidaemic-female-wistar-rats
#5
Kamila Sabino Batista, Adriano Francisco Alves, Marcos Dos Santos Lima, Laiane Alves da Silva, Priscilla Paulo Lins, Jéssyca Alencar de Sousa Gomes, Alexandre Sérgio Silva, Lydiane Tavares Toscano, Bruno Raniere Lins de Albuquerque Meireles, Angela Maria Tribuzy de Magalhães Cordeiro, Maria Lúcia da Conceição, Evandro Leite de Souza, Jailane de Souza Aquino
This study assessed the effects of diet supplementation with industrial processing by-products of acerola (Malpighia emarginata D.C.), cashew (Anacardium occidentale L.) and guava (Psidium guajava L.) fruit on the intestinal health and lipid metabolism of female Wistar rats with diet-induced dyslipidaemia. Female rats were randomly divided into five groups: healthy control, dyslipidaemic control and dyslipidaemic experimental receiving acerola, cashew or guava processing by-products. Fruit processing by-products were administered (400 mg/kg body weight) via orogastric administration for 28 consecutive days...
January 2018: British Journal of Nutrition
https://www.readbyqxmd.com/read/29333046/development-and-validation-of-high-performance-thin-layer-chromatography-method-for-simultaneous-determination-of-polyphenolic-compounds-in-medicinal-plants
#6
C V Jayachandran Nair, Sayeed Ahamad, Washim Khan, Varisha Anjum, Rajani Mathur
Context: Quantitative standardization of plant-based products is challenging albeit essential to maintain their quality. Aims: This study aims to develop and validate high-performance thin-layer chromatography (HPTLC) method for the simultaneous determination of rutin (Ru), quercetin (Qu), and gallic acid (Ga) from Psidium guajava Linn. (PG) and Aegle marmelos (L.) Correa. (AM) and correlate with antioxidant activity. Materials and Methods: The stock solution (1 mg/mL) of standard Ru, Qu, and Ga in methanol: Water (1:1) was serially diluted and spotted (5 μL) on slica gel 60 F254 thin-layer chromatography plates...
December 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/29274417/chemical-profile-of-a-polysaccharide-from-psidium-guajava-leaves-and-it-s-in-vivo-antitussive-activity
#7
Sadhana Khawas, Veronika Sivová, Namrata Anand, Kaushik Bera, Bimalendu Ray, Gabriela Nosáľová, Sayani Ray
Decoction of Psidium guajava leaves has been used as medication for chronic coughs and breathlessness for ages. Despite demonstration of antitussive activity, the specific molecule responsible for this remains unidentified. Herein, we report chemical profile and antitussive activity of its water extract (WE) and a polysaccharide (F1) present therein. This polysaccharide (F1), purified from WE by precipitation with ethanol and then through Cu(II)acetate, contains Ara, Gal, Rha, Glc and GalA residues, and has a molecular mass of 156 kDa...
December 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29182924/control-of-anthracnose-caused-by-colletotrichum-species-in-guava-mango-and-papaya-using-synergistic-combinations-of-chitosan-and-cymbopogon-citratus-d-c-ex-nees-stapf-essential-oil
#8
Priscila Dinah Lima Oliveira, Kataryne Árabe Rimá de Oliveira, Willie Anderson Dos Santos Vieira, Marcos Paz Saraiva Câmara, Evandro Leite de Souza
This study assessed the efficacy of chitosan (Chi) and Cymbopogon citratus (D.C. ex Nees) Stapf. essential oil (CCEO) combinations to control the mycelial growth of five pathogenic Colletotrichum species (C. asianum, C. siamense, C. fructicola, C. tropicale and C. karstii) in vitro, as well as the anthracnose development in guava (Psidium guajava L.) cv. Paluma, mango (Mangifera indica L.) cv. Tommy Atkins and papaya (Carica papaya L.) cv. Papaya artificially inoculated with these species. Combinations of Chi (2...
November 24, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29166193/traditional-method-of-initial-diarrhea-treatment-in-children
#9
Kristian Ade Chandra, Dessie Wanda
Diarrhea is the most common cause of death in children. For diarrhea, home treatment should be administered by parents to prevent diarrheal complications. The purpose of this research was to investigate the traditional method of diarrhea treatment in Tegal regency, Central Java, Indonesia. A descriptive study was conducted with the aim of describing the traditional method of home treatment for diarrhea in children. The study sample included families with children who were experiencing or had experienced diarrhea and had received traditional medicine...
2017: Comprehensive Child and Adolescent Nursing
https://www.readbyqxmd.com/read/29101063/anti-staphylococcal-properties-of-four-plant-extracts-against-sensitive-and-multi-resistant-bacterial-strains-isolated-from-cattle-and-rabbits
#10
Mayra Fernanda Echeverría Medina, Peter Adeniyi Alaba, María Elena Estrada-Zuñiga, Valente Velázquez-Ordoñez, Alberto Barbabosa-Pliego, Mohmaed Z M Salem, María Uxúa Alonso-Fresán, Luis Miguel Camacho-Díaz, Abdelfattah Z M Salem
The aim of this study is to investigate the biopotency of methanolic extracts of Vitex mollis, Psidium guajava, Dalbergia retusa, and Crescential alata leaves against various staphylococcal strains isolated from cattle and rabbits. Methicillin-resistant S. aureus strains were isolated from cattle, while other strains were isolated from rabbits using standard methodology. The total phytochemical phenolic and saponins contents were obtained being the main groups of the antinutritional factors. The antimicrobial activity of the extracts against the standard culture of S...
October 31, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29080615/antiviral-activity-of-five-asian-medicinal-pant-crude-extracts-against-highly-pathogenic-h5n1-avian-influenza-virus
#11
Benjaporn Sornpet, Teerapong Potha, Yingmanee Tragoolpua, Kidsadagon Pringproa
OBJECTIVE: To study the antiviral properties of the five Asian medicinal plants against in vitro infection by the highly pathogenic avian influenza virus (H5N1). METHODS: Crude extracts of Andrographis paniculata, Curcuma longa (C. longa), Gynostemma pentaphyllum, Kaempferia parviflora (K. parviflora), and Psidium guajava obtained by both water and ethanol extractions were investigated for their cytotoxicity in the Madin-Darby canine kidney cells. Thereafter, they were investigated in vitro for antiviral activity and cytokine response upon H5N1 virus infection...
September 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/29037684/chitosan-delays-ripening-and-ros-production-in-guava-psidium-guajava-l-fruit
#12
Willian Batista Silva, Gláucia Michelle Cosme Silva, Diederson Bortolini Santana, Acácio Rodrigues Salvador, David Barbosa Medeiros, Ikram Belghith, Natália Martins da Silva, Maria Helena Menezes Cordeiro, Gisele Polete Misobutsi
Guava is a typically tropical fruit highly perishable with a short shelf-life due to intense metabolic activity after harvested. In attempt to minimize the problems related to the postharvest, we evaluated the physiochemical characteristics and antioxidant system in guava fruits under chitosan coating at concentrations of 1%, 2%, and 3% stored at 25°C during 96h. The chitosan suppressed the respiratory rate, fresh weight loss, firmness and skin color with delay in the degradation of chlorophyll. In the treatment with 2% and 3% of chitosan in the solid soluble content and ascorbic acid were reduced; retarded the loss of titratable acidity during 96h after treatment...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29033964/management-of-fruit-species-in-urban-home-gardens-of-argentina-atlantic-forest-as-an-influence-for-landscape-domestication
#13
Violeta Furlan, María L Pochettino, Norma I Hilgert
Home gardens are considered germplasm repositories and places for experimentation, thus they are key sites for the domestication of plants. Domestication is considered a constant process that occurs along a continuum from wild to managed to domesticated populations. Management may lead to the modification of populations and in other cases to their distribution, changing population structure in a landscape. Our objective is focused on the management received in home gardens by perennial species of fruits. For this, the management practices applied to native and exotic perennial fruits species by a group of 20 women in the periurban zone of Iguazú, Argentina, were analyzed...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29020526/antioxidant-and-mercury-chelating-activity-of-psidium-guajava-var-pomifera-l-leaves-hydroalcoholic-extract
#14
Antonio Ivanildo Pinho, Cláudia Sirlene Oliveira, Fabricio Luís Lovato, Emily Pansera Waczuk, Bruna Candia Piccoli, Aline Augusti Boligon, Nadghia Figueredo Leite, Henrique Douglas Melo Coutinho, Thais Posser, João Batista Teixeira Da Rocha, Jeferson Luis Franco
Mercury (Hg) is widely distributed in the environment and is known to produce several adverse effects in organisms. The aim of the present study was to examine the in vitro antioxidant activity and Hg chelating ability of the hydroalcoholic extract of Psidium guajava leaves (HEPG). In addition, the potential protective effects of HEPG against Hg(II) were evaluated using a yeast model (Saccharomyces cerevisiae). HEPG was found to exert significant antioxidant activity in 2,2-diphenyl-1-picrylhydrazyl scavenger and inhibition of lipid peroxidation induced by Fe(II) assays in a concentration-dependent manner...
October 11, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28989253/psidium-guajava-a-single-plant-for-multiple-health-problems-of-rural-indian-population
#15
REVIEW
Poonam G Daswani, Manasi S Gholkar, Tannaz J Birdi
The rural population in India faces a number of health problems and often has to rely on local remedies. Psidium guajava Linn. (guava), a tropical plant which is used as food and medicine can be used by rural communities due to its several medicinal properties. A literature search was undertaken to gauge the rural health scenario in India and compile the available literature on guava so as to reflect its usage in the treatment of multiple health conditions prevalent in rural communities. Towards this, electronic databases such as Pubmed, Science Direct, google scholar were scanned...
July 2017: Pharmacognosy Reviews
https://www.readbyqxmd.com/read/28964367/characterization-of-phenolic-and-other-polar-compounds-in-peel-and-flesh-of-pink-guava-psidium-guajava-l-cv-criolla-by-ultra-high-performance-liquid-chromatography-with-diode-array-and-mass-spectrometric-detection
#16
Carolina Rojas-Garbanzo, Benno F Zimmermann, Nadine Schulze-Kaysers, Andreas Schieber
Pink guava (Psidium guajava L.) is a highly consumed fruit in tropical countries. Despite of interesting research on health effects of this fruit, investigations into the profile of secondary plant metabolites are scarce. In this study, the phenolic compounds in the peel and flesh of pink guava were characterized by ultra-high performance liquid chromatography with diode array and mass spectrometric detection. Sixty phenolic compounds were characterized by MS(2) and classified as ellagitannins, flavones, flavonols, flavanols, proanthocyanidins, dihydrochalcones, and anthocyanidins, and non-flavonoids such as phenolic acid derivatives, stilbenes, acetophenones, and benzophenones...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28963612/biochemical-and-hormonal-parameters-of-lambs-using-guava-psidium-guajava-l-agro-industrial-waste-in-the-diet
#17
Roberto G Costa, Neila L Ribeiro, Priscila T Nobre, Francisco F R Carvalho, Ariosvaldo N Medeiros, George R B Cruz, Luís F S Freire
The objective of this research was to evaluate the biochemical and hormonal parameters of Santa Inês sheep that received diets with different levels of guava agro-industrial waste (GAW). Forty non-castrated male animals of the Santa Inês breed were used, with an average initial weight of 21.3 ± 2.6 kg, and an average age of 120 days. The animals were distributed in a completely randomized design, with five treatments and eight replicates, and fed with increasing GAW levels replacing hay (0.0, 7.5, 15...
September 29, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28946269/effect-of-chitosan-and-alginate-based-coatings-enriched-with-pomegranate-peel-extract-to-extend-the-postharvest-quality-of-guava-psidium-guajava-l
#18
M Sneha Nair, Alok Saxena, Charanjit Kaur
The influence of chitosan (1% w/v) and alginate (2% w/v) coatings in combination with pomegranate peel extract (PPE; 1% w/v) on quality of guavas (cv Allahabad safeda) were studied. Restricted changes were recorded in respiration rate, ripening index, and instrumental colour values in case of the coated samples as compared to the control for 20days at 10°C. Samples coated with chitosan enriched with PPE (CHE) proved to be the most effective treatment in maintaining the overall fruit quality. Ascorbic acid, total phenolics, total flavonoids contents and antioxidant activity were recorded with restricted losses of 29%, 8%, 12%, 12% (DPPH) and 9% (FRAP), respectively for CHE samples at the end of storage...
February 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28941687/physicochemical-total-phenols-and-pectin-methylesterase-changes-on-quality-maintenance-on-guava-fruit-psidium-guajava-l-coated-with-candeuba-wax-solid-lipid-nanoparticles-xanthan-gum
#19
Claudia Idalid García-Betanzos, Humberto Hernández-Sánchez, Tanía Florencia Bernal-Couoh, David Quintanar-Guerrero, María de la Luz Zambrano-Zaragoza
The objective of this work was to evaluate the application of candeuba wax solid lipid nanoparticles (SLN) and xanthan gum (XG) as coatings on guava, and their effect on the fruit's physicochemical and nutritional parameters, complementing a previous publication carried out by Zambrano-Zaragoza et al. (2013). The concentrations of SLN were selected according to those reported as the most (65g/L) and least (75g/L) efficient in post-harvest life preservation, and were compared to a coating of XG and untreated control samples...
November 2017: Food Research International
https://www.readbyqxmd.com/read/28935551/anti-trypanosoma-anti-leishmania-and-cytotoxic-activities-of-natural-products-from-psidium-brownianum-mart-ex-dc-and-psidium-guajava-var-pomifera-analysed-by-lc-ms
#20
Celestina Elba Sobral de Souza, Ana Raquel Pereira da Silva, Maria Celeste Vega Gomez, Míriam Rolóm, Cathia Coronel, José Galberto Martins da Costa, Amanda K Sousa, Larissa A Rolim, Francisco Hugo Sobral de Souza, Henrique Douglas Melo Coutinho
Neglected diseases are those that are prevalent in developing countries, even with a rich biodiversity. These diseases still persist because of the lack of scientific studies, government negligence or failures of the public health system. This study aims to identify the composition of extracts and fractions from Psidium brownianum and Psidium guajava through LC-MS, to evaluate its in vitro anti-parasitic and cytotoxic activity against Trypanosoma cruzi, Leishmania brasiliensis and L. infantum epismastigote and promastigote forms, as well as mammalian cells...
December 2017: Acta Tropica
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