keyword
https://read.qxmd.com/read/38113217/antibiofilm-and-anti-quorum-sensing-activity-of-psidium-guajava-l-leaf-extract-in-vitro-and-in-silico-approach
#21
JOURNAL ARTICLE
Mo Ahamad Khan, Ismail Celik, Haris M Khan, Mohammad Shahid, Anwar Shahzad, Sachin Kumar, Bilal Ahmed
The quorum sensing mechanism relies on the detection and response to chemical signals, termed autoinducers, which regulate the synthesis of virulence factors including toxins, enzymes, and biofilms. Emerging therapeutic strategies for infection control encompass approaches that attenuate quorum-sensing systems. In this study, we evaluated the antibacterial, anti-quorum sensing, and anti-biofilm activities of Psidium guajava L. methanolic leaf extracts (PGME). Minimum Inhibitory Concentrations (MICs) of PGME were determined as 500 μg/ml for C...
2023: PloS One
https://read.qxmd.com/read/38104220/new-polyvinyl-alcohol-gellan-gum-based-bioplastics-with-guava-and-chickpea-extracts-for-food-packaging
#22
JOURNAL ARTICLE
Shaimaa Elsaeed, Elsayed Zaki, Ayman Diab, Menna-Alla Tarek, Walaa A E Omar
Plastic is a fossil-based synthetic polymer that has become an essential material in our daily life. Plastic pollution resulting from the accumulation of plastic objects has become problematic for our environment. Bioplastic can be a biodegradable environmentally friendly alternative for the synthetic plastic. In this paper, bioplastics based on polyvinyl alcohol (PVA)/gellan gum (GG) blend have been produced in three different compositions and their chemical structure, mechanical, morphological and thermal properties have been studied...
December 16, 2023: Scientific Reports
https://read.qxmd.com/read/38103080/biogenic-synthesis-of-dopamine-carboxymethyl-cellulose-tio-2-nanoparticles-using-psidium-guajava%C3%A2-leaf-extract-with-enhanced-antimicrobial-and-anticancer-activities
#23
JOURNAL ARTICLE
Kavina Ganapathy, Vaibhav Rastogi, Chandra Prakash Lora, Jagadeesh Suriyaprakash, Abdullah A Alarfaj, Abdurahman Hajinur Hirad, T Indumathi
The green synthesis of metal oxide nanoparticles (NPs) has garnered considerable attention from researchers due to its utilization of eco-friendly solvents during synthesis and cost-effective approaches. This study focuses on the synthesis of titanium oxide (TiO2 ) and dopamine (DA) carboxymethyl cellulose (CMC)-doped TiO2 (DA/CMC/TiO2 ) NP using Psidium guajava leaf extract, while also investigating the structural, optical, and morphological and biocidal potential of the prepared NPs. Significantly larger zones of inhibition were observed for DA/CMC/TiO2 NPs compared to TiO2 against various pathogens...
December 16, 2023: Bioprocess and Biosystems Engineering
https://read.qxmd.com/read/38089797/selection-and-validation-of-reference-genes-for-normalizing-qrt%C3%A2-pcr-gene-expression-studies-in-colletotrichum-gloeosporioides-and-interaction-with-the-guava-plants
#24
JOURNAL ARTICLE
Imran Ul Haq, Siddra Ijaz, Abeer Hashem, Graciela Dolores Avila-Quezada, Elsayed Fathi Abd Allah
Quantitative real-time PCR is used to quantify gene expression, even to detect low-level transcripts. It detects and quantifies the inoculum level of fungal pathogens in infected hosts. However, reliable expression profiling data require accurate transcript normalization against a stable reference gene. Hence, using stably expressed reference genes under variable conditions is paramount in gene expression analysis. In the current study, reference genes were selected and validated in Colletotrichum gloeosporioides , a guava canker and dieback pathogen...
2023: Frontiers in Plant Science
https://read.qxmd.com/read/38047561/assessment-of-the-effect-of-antidiarrheal-drugs-and-plant-extracts-on-drosophila-melanogaster
#25
JOURNAL ARTICLE
Chengmei Liu, François Chassagne
To study human gastrointestinal physiology, biomedical scientists have relied on the use of model organisms. Although many researchers have used mice as a model to study intestinal function, only a few reports have focused on Drosophila melanogaster (D. melanogaster). Compared to mice, fruit flies present many advantages, such as a short life cycle, cost-effective and simple maintenance, and no ethical issues. Furthermore, the mammalian gastrointestinal physiology, anatomy, and signaling pathways are highly conserved in D...
November 17, 2023: Journal of Visualized Experiments: JoVE
https://read.qxmd.com/read/38044537/guava-fibre-characterization-and-effects-on-digestibility-fermentation-products-gastrointestinal-transit-time-and-palatability-of-dry-diets-for-dogs
#26
JOURNAL ARTICLE
Mariana Monti, Bruna A Loureiro, Raquel Silveira Pedreira, Fernanda S Mendonça, Thaila C Putarov, Cecilia Villaverde, Aulus Cavalieri Carciofi
The use of fruit fibres as a way of reusing industrial waste is attractive and necessary, increasing the efficiency and reducing the environmental impact of the industry. This study characterized guava fibre as a fibrous ingredient and evaluated its effects when included in extruded diets for dogs on nutrient digestibility, faecal traits, fermentation products, gastrointestinal transit time and palatability. Four diets were formulated: CO (control diet, no fibrous ingredients added), GF3 (3% guava fibre), GF6 (6% guava fibre) and GF12 (12% guava fibre)...
December 3, 2023: Journal of Animal Physiology and Animal Nutrition
https://read.qxmd.com/read/38010738/antifungal-edible-coatings-for-fruits-based-on-zein-and-chitosan-nanowhiskers
#27
JOURNAL ARTICLE
Carolina L Almeida, Lucas R F Figueiredo, Diego V M Ribeiro, Adillys M C Santos, Evandro L Souza, Kataryne A R Oliveira, Juliano E Oliveira, Eliton S Medeiros
Fresh produce have a more limited shelf life than processed ones. Their sensory attributes such as appearance and surface texture are important features in consumer perception and liking. The decomposition of fresh produce, which is caused by enzymes, chemical reactions, and microbial infections, often caused by Colletotrichum species, is inevitable. However, it can be slowed down. Several materials have been developed for this purpose, with an emphasis on active coatings using nanomaterials. In this study, the protective effects of a zein coating containing chitosan nanowhiskers (CSW) for the maintenance of fruit quality were investigated using guava (Psidium guajava L...
November 27, 2023: Journal of Food Science
https://read.qxmd.com/read/38002972/identification-and-profiling-analysis-of-micrornas-in-guava-fruit-psidium-guajava-l-and-their-role-during-ripening
#28
JOURNAL ARTICLE
Mario Alejandro Mejía-Mendoza, Cristina Garcidueñas-Piña, Blanca Estela Barrera-Figueroa, José Francisco Morales-Domínguez
The guava ( Psidium guajava L.) is a climacteric fruit with an accelerated post-harvest overripening. miRNAs are small RNA sequences that function as gene regulators in eukaryotes and are essential for their survival and development. In this study, miRNA libraries were constructed, sequenced and analyzed from the breaker and ripe stages of guava fruit cv. Siglo XXI. One hundred and seventy-four mature miRNA sequences from 28 miRNA families were identified. The taxonomic distribution of the guava miRNAs showed a high level of conservation among the dicotyledonous plants...
October 31, 2023: Genes
https://read.qxmd.com/read/37996915/ethnobotanical-study-on-medicinal-plant-knowledge-among-three-ethnic-groups-in-peri-urban-areas-of-south-central-ethiopia
#29
JOURNAL ARTICLE
Sintayehu Tamene, Mesele Negash, Fortunatus Bulabo Makonda, Linley Chiwona-Karltun, Kefyalew Sahle Kibret
BACKGROUND: Documenting traditional knowledge on plant use among ethnic groups has enabled researchers to obtain a better understanding of how indigenous flora is seen and used in daily life. Their therapeutic applications will also encourage future conservation and phytochemical research, potentially leading to the development of novel drugs. However, past ethnobotanical studies conducted in Ethiopia mainly focused on rural areas, and limited coverage to document the ethnobotanical knowledge at the rural‒urban interface...
November 23, 2023: Journal of Ethnobiology and Ethnomedicine
https://read.qxmd.com/read/37950805/assessment-of-air-pollution-tolerance-potential-of-selected-dicot-tree-species-for-urban-forestry
#30
JOURNAL ARTICLE
Nitika Sharma, Akanksha Bakshi, Mandeep Kaur, Inderpreet Kaur, Avinash Kaur Nagpal
Air pollution is one of the killers of our age especially for the urban areas. Urban forestry which involves planting more trees has been considered as one of the prominent strategies to mitigate air pollution. Identification of trees tolerant to air pollution is important for plantation drives being organized across the country. The present study aimed to compare the air pollution tolerance potential of 46 tree species growing in Guru Nanak Dev University (GNDU) campus, Amritsar, using two indices, viz., Air Pollution Tolerance Index (APTI) and Anticipated Performance Index (API)...
November 11, 2023: Environmental Monitoring and Assessment
https://read.qxmd.com/read/37928750/hazard-assessment-of-urban-trees-along-the-bagmati-river-corridor-a-case-study-from-kathmandu-metropolitan-city-ward-number-8
#31
JOURNAL ARTICLE
Jun Shapkota, Jeetendra Gautam
Urban trees are extremely significant and provide numerous advantages for both the environment and people. In order to provide a healthy and sustainable environment, green spaces have long been seen as a crucial component of contemporary cities. Nevertheless, as urbanization and population growth have accelerated, environmental challenges have become a major worldwide issue. This study mainly focuses on the assessment of hazardous trees along the Bagmati river corridor and documents major tree species for urban forestry...
2023: Scientifica
https://read.qxmd.com/read/37920640/review-of-phytochemicals-present-in-psidium-guajava-plant-and-its-mechanism-of-action-on-medicinal-activities
#32
REVIEW
Dhanshree M Joshi, Swanand S Pathak, Shraddha Banmare, Sweza S Bhaisare
For centuries, herbal remedies have been employed to address a variety of human ailments, and Psidium guajava Linn (Myrtaceae), commonly known as guava, stands out as a noteworthy medicinal plant with significant pharmacological potential. In India, particularly in rural areas where access to conventional medicines can be limited, the various parts of the Psidium guajava plant, including its leaves, bark, roots, and fruit, have been harnessed for their therapeutic properties to tackle various health issues...
October 2023: Curēus
https://read.qxmd.com/read/37917799/larvicidal-and-fungicidal-activity-of-the-leaf-essential-oil-of-five-myrtaceae-species
#33
JOURNAL ARTICLE
Frances Rejane Dos Santos, Sabrina Rita da Fonseca Rezende, Luan Valim Dos Santos, Elaine Rodrigues Miranda Nery Silva, Matheus Silva Caiado, Marco André Alves Souza, Emerson Guedes Pontes, Mario Geraldo Carvalho, Raimundo Braz Filho, Rosane Nora Castro
Myrtaceae is one of the most diverse and abundant botanical families, exhibiting wide diversity in the chemical composition of essential oils (EOs). EOs have various biotechnological applications such as controlling the populations of organisms that negatively impact humans. This study aimed to extract EOs from Myrtaceae species, chemically characterize them, and evaluate their larvicidal and fungicidal effects. EOs were extracted from the leaves of Eugenia brasiliensis, Eugenia uniflora, Psidium cattleyanum, Psidium guajava, and Syzygium cumini by hydrodistillation for 3 h and characterized by chromatographic analysis...
November 2, 2023: Chemistry & Biodiversity
https://read.qxmd.com/read/37910451/physical-and-chemical-properties-of-aloe-vera-coated-guava-psidium-guajava-fruit-during-refrigerated-storage
#34
JOURNAL ARTICLE
Debashis Kumar Dutta Roy, Md Asaduzzaman, Tanny Saha, Mst Nazma Khatun
Guavas (Psidium guajava) are regarded as one of the most perishable commodities, primarily owing to their climacteric characteristics and heightened metabolic processes, resulting in a faster rate of softening. Edible coating is a natural ingredient that is employed as an alternative to extend the shelf life of fruits while also providing bioactive and functional compounds. Aloe vera gel is predominantly used for this purpose due to its widespread availability. Various concentrations of aloe vera-based coating formulation (25%, 50%, 75%, and 100%) were applied on fresh whole guava by dipping method...
2023: PloS One
https://read.qxmd.com/read/37901496/tanning-wastewater-sterilization-in-the-dark-and-sunlight-using-psidium-guajava-leaf-derived-copper-oxide-nanoparticles-and-their-characteristics
#35
JOURNAL ARTICLE
Natrayan Lakshmaiya, Raviteja Surakasi, V Swamy Nadh, Chidurala Srinivas, Seniappan Kaliappan, Velmurugan Ganesan, Prabhu Paramasivam, Seshathiri Dhanasekaran
Employing Psidium guajava ( P. guajava ) extract from leaves, copper oxide nanoparticles (CuO NPs), likewise referred to as cupric oxide and renowned for their sustainable and harmless biogenesis, have the possibility of being useful for the purification of pollutants as well as for medicinal purposes. The current study examined the generated CuO NPs and their physical qualities by using ultraviolet-visible (UV) spectroscopy. The distinctive peak at 265 nm of the CuO NP production was originally seen. Additionally, an X-ray diffraction (XRD) investigation was conducted to identify the crystalline arrangement of the produced CuO NPs, and a Fourier transform infrared (FTIR) spectroscopy examination was performed to validate the functional compounds of the CuO NPs...
October 24, 2023: ACS Omega
https://read.qxmd.com/read/37891358/aroma-based-discrimination-of-egyptian-versus-indian-guava-fruits-and-in-response-to-probiotics-as-analyzed-via-spme-gc-ms-and-chemometric-tools
#36
JOURNAL ARTICLE
Islam M Kamal, Ahmed Zayed, Tarek F Eissa, Mohamed A Farag
Guava tree (Psidium guajava L., Myrtaceae) is an economic grown worldwide, particularly in tropical and subtropical regions. Guavas encompass numerous cultivars (cvs.) that were discriminated in previous studies based on leaf morphological features and profile of volatile organic compounds (VOCs). Nevertheless, fruit VOCs have also shown outstanding potential for discrimination of other plant taxa, which has not been utilized in guava. Hence, the current study investigates the various guava cvs. harvested from India and Egypt...
October 27, 2023: Scientific Reports
https://read.qxmd.com/read/37880735/medicinal-plants-for-treatment-of-diarrhoeal-diseases-among-under-five-children-experience-from-traditional-healers-in-north-eastern-tanzania
#37
JOURNAL ARTICLE
Edwin Liheluka, Nyasiro Sophia Gibore, John P A Lusingu, Samwel Gesase, Daniel T R Minja, Maike Lamshöft, Denise Dekker, Theodora Bali
BACKGROUND: Right through history, humans have relied heavily on plants for sustenance and the healing of different ailments. One of the long-standing traditions that communities have inherited from earlier generations is the use of herbal medicines for the treatment of paediatric ailments, including diarrhoea. This study showcased medicinal plants used by traditional healers for the treatment of diarrhoeal diseases among under-five children in North-eastern Tanzania. METHODS AND DESIGN: A qualitative research approach and a narrative research design were employed...
October 25, 2023: BMC complementary medicine and therapies
https://read.qxmd.com/read/37803711/ultrasonic-pre-treatment-to-enhance-drying-of-potentially-probiotic-guava-psidium-guajava-impact-on-drying-kinetics-lacticaseibacillus-rhamnosus-gg-viability-and-functional-quality
#38
JOURNAL ARTICLE
Daniele Juliana Rodrigues Gonçalves, Nataly de Almeida Costa, Maria José do Amaral E Paiva, Vanessa Caroline de Oliveira, Nicole Marina Almeida Maia, Isabela Soares Magalhães, Larissa Lorrane Rodrigues Borges, Paulo César Stringheta, Eliane Mauricio Furtado Martins, Érica Nascif Rufino Vieira, Meliza Lindsay Rojas, Bruno Ricardo de Castro Leite Júnior
This study aimed to evaluate the effects of ultrasound (US) on the drying acceleration of potentially probiotic guava, including its impact on drying kinetics, probiotic (Lacticaseibacillus rhamnosus GG) viability, and functional quality of the product during drying. To perform US pre-treatments, one group of samples were first pre-treated by US (38 W/L, 25 kHz) for 15 and 30 min and then immersed in the probiotic solution for 15 or 30 min, and another group of samples were submerged in the probiotic solution simultaneously applying US (US-assisted) for 15 and 30 min...
November 2023: Food Research International
https://read.qxmd.com/read/37764372/maltodextrin-as-a-drying-adjuvant-in-the-lyophilization-of-tropical-red-fruit-blend
#39
JOURNAL ARTICLE
Yaroslávia Ferreira Paiva, Rossana Maria Feitosa de Figueirêdo, Alexandre José de Melo Queiroz, Francislaine Suelia Dos Santos, Lumara Tatiely Santos Amadeu, Antônio Gilson Barbosa de Lima, Thalis Leandro Bezerra de Lima, Wilton Pereira da Silva, Henrique Valentim Moura, Eugênia Telis de Vilela Silva, Caciana Cavalcanti Costa, Plúvia Oliveira Galdino, Josivanda Palmeira Gomes, Douglas Alexandre Saraiva Leão
Guava, pitanga and acerola are known for their vitamin content and high levels of bioactive compounds. Thus, the preparation of combinations of these fruits comprises a blend with high nutraceutical potential, yielding a strong and attractive pigmentation material. In this study, the influence of different proportions of maltodextrin on the lyophilization of a blend of guava, acerola and pitanga was evaluated considering not only the physicochemical, physical and colorimetric parameters but also the bioactive compounds in the obtained powders...
September 13, 2023: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/37760791/role-of-citrullus-colocynthis-and-psidium-guajava-mediated-green-synthesized-silver-nanoparticles-in-disease-resistance-against-aeromonas-hydrophila-challenge-in-labeo-rohita
#40
JOURNAL ARTICLE
Ramsha Hafeez, Zakia Kanwal, Muhammad Akram Raza, Shafqat Rasool, Saira Riaz, Shahzad Naseem, Shifa Rabani, Imran Haider, Naushad Ahmad, Suliman Yousef Alomar
Green synthesis of metallic nanoparticles is an auspicious method of preparing nanoparticles using plant extracts that have lesser toxicity to animal cells and the host. In the present work, we analyzed the antibacterial activity of Citrullus colocynthis and Psidium guajava -mediated silver nanoparticles (Cc-AgNPs and Pg-AgNPs, respectively) against Aeromonas hydrophila ( A. hydrophila ) in an in vivo assay employing Labeo rohita ( L. rohita ). L. rohita were divided into six groups for both Cc-AgNPs and Pg-AgNPs treatments separately: Control, A...
August 23, 2023: Biomedicines
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