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1.
Crit Rev Biotechnol ; : 1-25, 2024 Jan 16.
Artículo en Inglés | MEDLINE | ID: mdl-38228500

RESUMEN

In the food industry, despite the widespread use of interventions such as preservatives and thermal and non-thermal processing technologies to improve food safety, incidences of foodborne disease continue to happen worldwide, prompting the search for alternative strategies. Bacteriophages, commonly known as phages, have emerged as a promising alternative for controlling pathogenic bacteria in food. This review emphasizes the potential applications of phages in biological sciences, food processing, and preservation, with a particular focus on their role as biocontrol agents for improving food quality and preservation. By shedding light on recent developments and future possibilities, this review highlights the significance of phages in the food industry. Additionally, it addresses crucial aspects such as regulatory status and safety concerns surrounding the use of bacteriophages. The inclusion of up-to-date literature further underscores the relevance of phage-based strategies in reducing foodborne pathogenic bacteria's presence in both food and the production environment. As we look ahead, new phage products are likely to be targeted against emerging foodborne pathogens. This will further advance the efficacy of approaches that are based on phages in maintaining the safety and security of food.

3.
Chem Biodivers ; 20(9): e202300479, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37667613

RESUMEN

Leaves of jamun collected as agro by-produce during the cultivation of jamun is traditionally used as ayurvedic medicine to treat diabetes, gall bladder stones and other ailments. Most of the beneficial effects of jamun leaves are associated with phytochemicals found in jamun leaves such as gallic acid, tannins, mallic acid, flavonoids, essential oils, jambolin, ellagic acid, jambosine, antimellin and betulinic acid. Jamun possess curative activities like anticancer, antidiabetic, antifertility, anti-inflammatory, antidiarrheal, antimicrobial, antinociceptive, antioxidant, antiradiation, chemotherapeutic, and gastroprotective. The main goal of this review article is to provide information on the nutritional content, phytochemical composition and health promoting properties of jamun leaves. The review of literature based on the phytochemical composition and health promoting benefits of the jamun leaves, suggests that leaves can be used as potential constituent in the formulation of pharmacological drugs. From the review literature it is found that clinical, in-vivo, in-vitro studies are still required to check the health promoting effects of jamun leaves extracts on humans.


Asunto(s)
Syzygium , Humanos , Antioxidantes/farmacología , Ácido Betulínico , Flavonoides , Ácido Gálico
4.
Cell Death Dis ; 14(5): 324, 2023 05 13.
Artículo en Inglés | MEDLINE | ID: mdl-37173333

RESUMEN

Mesenchymal stem cell (MSC) transplantation alleviates metabolic defects in diseased recipient cells by intercellular mitochondrial transport (IMT). However, the effect of host metabolic conditions on IMT and thereby on the therapeutic efficacy of MSCs has largely remained unexplored. Here we found impaired mitophagy, and reduced IMT in MSCs derived from high-fat diet (HFD)-induced obese mouse (MSC-Ob). MSC-Ob failed to sequester their damaged mitochondria into LC3-dependent autophagosomes due to decrease in mitochondrial cardiolipin content, which we propose as a putative mitophagy receptor for LC3 in MSCs. Functionally, MSC-Ob exhibited diminished potential to rescue mitochondrial dysfunction and cell death in stress-induced airway epithelial cells. Pharmacological modulation of MSCs enhanced cardiolipin-dependent mitophagy and restored their IMT ability to airway epithelial cells. Therapeutically, these modulated MSCs attenuated features of allergic airway inflammation (AAI) in two independent mouse models by restoring healthy IMT. However, unmodulated MSC-Ob failed to do so. Notably, in human (h)MSCs, induced metabolic stress associated impaired cardiolipin-dependent mitophagy was restored upon pharmacological modulation. In summary, we have provided the first comprehensive molecular understanding of impaired mitophagy in obese-derived MSCs and highlight the importance of pharmacological modulation of these cells for therapeutic intervention. A MSCs obtained from (HFD)-induced obese mice (MSC-Ob) show underlying mitochondrial dysfunction with a concomitant decrease in cardiolipin content. These changes prevent LC3-cardiolipin interaction, thereby reducing dysfunctional mitochondria sequestration into LC3-autophagosomes and thus impaired mitophagy. The impaired mitophagy is associated with reduced intercellular mitochondrial transport (IMT) via tunneling nanotubes (TNTs) between MSC-Ob and epithelial cells in co-culture or in vivo. B Pyrroloquinoline quinone (PQQ) modulation in MSC-Ob restores mitochondrial health, cardiolipin content, and thereby sequestration of depolarized mitochondria into the autophagosomes to alleviate impaired mitophagy. Concomitantly, MSC-Ob shows restoration of mitochondrial health upon PQQ treatment (MSC-ObPQQ). During co-culture with epithelial cells or transplantation in vivo into the mice lungs, MSC-ObPQQ restores IMT and prevents epithelial cell death. C Upon transplantation in two independent allergic airway inflammatory mouse models, MSC-Ob failed to rescue the airway inflammation, hyperactivity, metabolic changes in epithelial cells. D PQQ modulated MSCs restored these metabolic defects and restored lung physiology and airway remodeling parameters.


Asunto(s)
Cardiolipinas , Células Madre Mesenquimatosas , Ratones , Animales , Humanos , Cardiolipinas/metabolismo , Mitofagia , Mitocondrias/metabolismo , Modelos Animales de Enfermedad , Células Madre Mesenquimatosas/metabolismo , Inflamación/metabolismo , Obesidad/metabolismo
5.
Genes (Basel) ; 14(3)2023 03 17.
Artículo en Inglés | MEDLINE | ID: mdl-36981012

RESUMEN

Endometrial cancer (EC) is among the most common gynecological disorders globally. As single nucleotide polymorphisms (SNPs) play an important role in the causation of EC, therefore, a comprehensive meta-analysis of 49 SNPs covering 25,446 cases and 41,106 controls was performed to identify SNPs significantly associated with increased EC risk. PubMed was searched to identify case control studies and meta-analysis was performed to compute the pooled odds ratio (OR) at 95% confidence interval (CI). Cochran's Q-test and I2 were used to study heterogeneity, based on which either a random or a fixed effect model was implemented. The meta-analysis identified 11 SNPs (from 10 genes) to be significantly associated with increased EC risk. Among these, seven SNPs were significant in at least three of the five genetic models, as well as three of the polymorphisms (rs1801320, rs11224561, and rs2279744) corresponding to RAD51, PGR, and MDM2 genes, which contained more than 1000 EC cases each and exhibited increased risk. The current meta-analysis indicates that polymorphisms associated with various hormone related genes-SULT1A1 (rs1042028), PGR (rs11224561), and CYP19A1 (rs10046 and rs4775936); DNA repair genes-ERCC2 (rs1799793), OGG1 (rs1052133), MLH1 (rs1800734), and RAD51 (rs1801320) as well as genes like MDM2 (rs2279744), CCND1 (rs9344), and SERPINE1 (rs1799889), are significantly associated with increased EC risk.


Asunto(s)
Neoplasias Endometriales , Polimorfismo de Nucleótido Simple , Femenino , Humanos , Predisposición Genética a la Enfermedad , Riesgo , Neoplasias Endometriales/genética , Reparación del ADN/genética , Proteína de la Xerodermia Pigmentosa del Grupo D/genética
6.
Int J Food Microbiol ; 388: 110083, 2023 Mar 02.
Artículo en Inglés | MEDLINE | ID: mdl-36708610

RESUMEN

This is proven for a long that the incorporation of probiotics and prebiotics in diet exhibits beneficial effects on intestinal and intrinsic health. Nevertheless, this may encounter loss of vitality all along the absorption in the gastrointestinal tract, leading to meager intestinal delivery of probiotic active ingredients. In recent times, nanotechnology has been passionately used to escalate the bioavailability of active ingredients. Versatile forms of nanoparticles (NPs) are devised to be used with probiotics/prebiotics/synbiotics or their different combinations. The NPs currently in trend are constituted of distinctive organic compounds like carbohydrates, proteins, fats, or inorganics such as oxides of silver and titanium or magnesium etc. This review critically explicates the emerging relationship of nanotechnology with probiotics and prebiotics for different applications in neutraceuticals. Here in this review, formulations of nanoprobiotics and nanoprebiotics are discussed in detail, which behave as an effective drug delivery system. In addition, these formulations exhibit anti-cancerous, anti-microbial, anti-oxidant and photo-protective properties. Limited availability of scientific research on nanotechnology concerning probiotics and prebiotics implies dynamic research studies on the bioavailability of loaded active ingredients and the effective drug delivery system by including the safety issues of food and the environment.


Asunto(s)
Probióticos , Simbióticos , Prebióticos , Probióticos/metabolismo , Nanotecnología , Dieta
7.
Reprod Sci ; 30(4): 1118-1132, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36195778

RESUMEN

Genetic variations like single nucleotide polymorphisms (SNPs) are associated with cervical carcinogenesis. In this study, SNPs have been identified that contribute toward changes in the function and stability of the proteins and show association with cervical cancer. Initially, literature mining identified 114 protein-coding polymorphisms with population-based evidence in cervical cancer. Subsequently, the functional assessment was performed using sequence-dependent tools, and thereafter, protein stability was analyzed using sequence and structural data. Twenty-three non-synonymous SNPs (nsSNPs) found to be damaging and destabilizing were then analyzed to check their risk association at the population level. The meta-analysis indicated that polymorphisms in DNA damage repair genes XRCC1 (rs25487 and rs1799782), ERCC5 (rs17655), and oxidative stress-related gene NQO1 (rs1800566) are significantly associated with increased cervical cancer risk. The XRCC1 rs25487 and rs1799782 polymorphisms showed the highest risk of cervical cancer in the homozygous model having odds ratio (OR) = 1.85, 95% confidence interval (CI) = 1.17-2.92, p = 0.01, and recessive model with OR = 1.81, 95% CI = 1.01-3.24, and p = 0.04 respectively. Similarly, rs17655 polymorphism of ERCC5 and rs1800566 polymorphism of NQO1 showed the highest pooled OR in the homozygous (OR = 1.70, 95% CI = 1.32-2.19, p = 0.00004) and heterozygous model (OR = 1.3, 95% CI = 1.06-1.58, p = 0.01) respectively. Thus, in this study, a comprehensive collection of nsSNPs was collated and assessed, leading to the identification of polymorphisms in DNA damage repair and oxidative stress-related genes, that destabilize the protein and shows increased risk associated with cervical cancer.


Asunto(s)
Neoplasias del Cuello Uterino , Femenino , Humanos , Estudios de Casos y Controles , Reparación del ADN/genética , Predisposición Genética a la Enfermedad , NAD(P)H Deshidrogenasa (Quinona)/genética , Polimorfismo de Nucleótido Simple , Riesgo , Neoplasias del Cuello Uterino/genética , Proteína 1 de Reparación por Escisión del Grupo de Complementación Cruzada de las Lesiones por Rayos X/genética
8.
Cells ; 11(19)2022 09 23.
Artículo en Inglés | MEDLINE | ID: mdl-36230930

RESUMEN

Circulating cell-free mitochondrial DNA (cf-mtDNA) has been found in the plasma of severely ill COVID-19 patients and is now known as a strong predictor of mortality. However, the underlying mechanism of mtDNA release is unexplored. Here, we show a novel mechanism of SARS-CoV-2-mediated pro-inflammatory/pro-apoptotic mtDNA release and a rational therapeutic stem cell-based approach to mitigate these effects. We systematically screened the effects of 29 SARS-CoV-2 proteins on mitochondrial damage and cell death and found that NSP4 and ORF9b caused extensive mitochondrial structural changes, outer membrane macropore formation, and the release of inner membrane vesicles loaded with mtDNA. The macropore-forming ability of NSP4 was mediated through its interaction with BCL2 antagonist/killer (BAK), whereas ORF9b was found to inhibit the anti-apoptotic member of the BCL2 family protein myeloid cell leukemia-1 (MCL1) and induce inner membrane vesicle formation containing mtDNA. Knockdown of BAK and/or overexpression of MCL1 significantly reversed SARS-CoV-2-mediated mitochondrial damage. Therapeutically, we engineered human mesenchymal stem cells (MSCs) with a simultaneous knockdown of BAK and overexpression of MCL1 (MSCshBAK+MCL1) and named these cells IMAT-MSCs (intercellular mitochondrial transfer-assisted therapeutic MSCs). Upon co-culture with SARS-CoV-2-infected or NSP4/ORF9b-transduced airway epithelial cells, IMAT-MSCs displayed functional intercellular mitochondrial transfer (IMT) via tunneling nanotubes (TNTs). The mitochondrial donation by IMAT-MSCs attenuated the pro-inflammatory and pro-apoptotic mtDNA release from co-cultured epithelial cells. Our findings thus provide a new mechanistic basis for SARS-CoV-2-induced cell death and a novel therapeutic approach to engineering MSCs for the treatment of COVID-19.


Asunto(s)
COVID-19 , Proteínas de la Nucleocápside de Coronavirus/metabolismo , ADN Mitocondrial , Proteínas no Estructurales Virales/metabolismo , ADN Mitocondrial/genética , ADN Mitocondrial/metabolismo , Humanos , Mitocondrias/metabolismo , Proteína 1 de la Secuencia de Leucemia de Células Mieloides/metabolismo , Fosfoproteínas/metabolismo , SARS-CoV-2
9.
J Cell Biol ; 221(7)2022 07 04.
Artículo en Inglés | MEDLINE | ID: mdl-35579602

RESUMEN

Neuregulins (NRGs) are EGF-like ligands associated with cognitive disorders. Unprocessed proNRG3 is cleaved by BACE1 to generate the mature membrane-bound NRG3 ligand, but the subcellular site of proNRG3 cleavage, mechanisms underlying its transport into axons, and presynaptic accumulation remain unknown. Using an optogenetic proNRG3 cleavage reporter (LA143-NRG3), we investigate the spatial-temporal dynamics of NRG3 processing and sorting in neurons. In dark conditions, unprocessed LA143-NRG3 is retained in the trans-Golgi network but, upon photoactivation, is cleaved by BACE1 and released from the TGN. Mature NRG3 then emerges on the somatodendritic plasma membrane from where it is re-endocytosed and anterogradely transported on Rab4+ vesicles into axons via transcytosis. By contrast, the BACE1 substrate APP is sorted into axons on Rab11+ vesicles. Lastly, by a mechanism we denote "trans-synaptic retention," NRG3 accumulates at presynaptic terminals by stable interaction with its receptor ErbB4 on postsynaptic GABAergic interneurons. We propose that trans-synaptic retention may account for polarized expression of other neuronal transmembrane ligands and receptors.


Asunto(s)
Axones , Neurregulinas , Receptor ErbB-4 , Transcitosis , Secretasas de la Proteína Precursora del Amiloide/genética , Secretasas de la Proteína Precursora del Amiloide/metabolismo , Animales , Ácido Aspártico Endopeptidasas/genética , Ácido Aspártico Endopeptidasas/metabolismo , Axones/metabolismo , Células HEK293 , Humanos , Ligandos , Ratones , Neurregulinas/genética , Neurregulinas/metabolismo , Ratas , Receptor ErbB-4/genética , Receptor ErbB-4/metabolismo
10.
Front Cell Infect Microbiol ; 11: 632646, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33796478

RESUMEN

A major bottleneck in scaling-up COVID-19 testing is the need for sophisticated instruments and well-trained healthcare professionals, which are already overwhelmed due to the pandemic. Moreover, the high-sensitive SARS-CoV-2 diagnostics are contingent on an RNA extraction step, which, in turn, is restricted by constraints in the supply chain. Here, we present CASSPIT (Cas13 Assisted Saliva-based & Smartphone Integrated Testing), which will allow direct use of saliva samples without the need for an extra RNA extraction step for SARS-CoV-2 detection. CASSPIT utilizes CRISPR-Cas13a based SARS-CoV-2 RNA detection, and lateral-flow assay (LFA) readout of the test results. The sample preparation workflow includes an optimized chemical treatment and heat inactivation method, which, when applied to COVID-19 clinical samples, showed a 97% positive agreement with the RNA extraction method. With CASSPIT, LFA based visual limit of detection (LoD) for a given SARS-CoV-2 RNA spiked into the saliva samples was ~200 copies; image analysis-based quantification further improved the analytical sensitivity to ~100 copies. Upon validation of clinical sensitivity on RNA extraction-free saliva samples (n = 76), a 98% agreement between the lateral-flow readout and RT-qPCR data was found (Ct<35). To enable user-friendly test results with provision for data storage and online consultation, we subsequently integrated lateral-flow strips with a smartphone application. We believe CASSPIT will eliminate our reliance on RT-qPCR by providing comparable sensitivity and will be a step toward establishing nucleic acid-based point-of-care (POC) testing for COVID-19.


Asunto(s)
Prueba de COVID-19/métodos , COVID-19/diagnóstico , Sistemas CRISPR-Cas , ARN Viral/aislamiento & purificación , SARS-CoV-2/aislamiento & purificación , Saliva/química , Humanos , Técnicas de Diagnóstico Molecular/métodos , Pruebas en el Punto de Atención , Reacción en Cadena en Tiempo Real de la Polimerasa , SARS-CoV-2/genética , Sensibilidad y Especificidad , Teléfono Inteligente , Manejo de Especímenes/métodos , Flujo de Trabajo
11.
Mitochondrion ; 58: 184-199, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-33766748

RESUMEN

Calcium (Ca2+) signalling is well known to dictate cellular functioning and fate. In recent years, the accumulation of Ca2+ in the mitochondria has emerged as an important factor in Chronic Respiratory Diseases (CRD) such as Asthma and Chronic Obstructive Pulmonary Disease (COPD). Various reports underline an aberrant increase in the intracellular Ca2+, leading to mitochondrial ROS generation, and further activation of the apoptotic pathway in these diseases. Mitochondria contribute to Ca2+ buffering which in turn regulates mitochondrial metabolism and ATP production. Disruption of this Ca2+ balance leads to impaired cellular processes like apoptosis or necrosis and thus contributes to the pathophysiology of airway diseases. This review highlights the key role of cytoplasmic and mitochondrial Ca2+ signalling in regulating CRD, such as asthma and COPD. A better understanding of the dysregulation of mitochondrial Ca2+ homeostasis in these diseases could provide cues for the development of advanced therapeutic interventions in these diseases.


Asunto(s)
Calcio/metabolismo , Enfermedades Pulmonares/metabolismo , Mitocondrias/metabolismo , Humanos
12.
Food Chem ; 297: 124989, 2019 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-31253302

RESUMEN

A study was conducted on the effects occurred in rheological properties of base flour dough by the addition of gluten, glutenin and purified low molecular weight glutenin subunits (LMW-GS) using a 4 g sample Microdoughlab (MDL). Incorporation of these elements brought about a significant increase in the dough strength in the order of LMW-GS < gluten < glutenin. LMW-GS from variety C 306 brought a decrease in the dough development time (DDT; 2.03 min), dough stability (DS; 3 min) and peak energy (EP; 2.90 Wh/kg) values. On the contrary, the effects of LMW-GS extracted from variety PBW 550 were more strong as indicated by an increase in DDT (2.75 min), DS (3.30 min) and EP (4.20 Wh/kg). The alterations in the microstructure of dough by the inclusion of gluten, glutenin and LMW-GS, which lacks resemblance among different samples, were contemplated subjecting it to Scanning Electron Microscopy (SEM).


Asunto(s)
Glútenes/química , Triticum/química , Cromatografía en Gel , Harina/análisis , Glútenes/aislamiento & purificación , Microscopía Electrónica de Rastreo , Peso Molecular , Reología , Triticum/metabolismo
13.
Indian J Sex Transm Dis AIDS ; 40(2): 113-119, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31922100

RESUMEN

BACKGROUND: Reproductive tract infections (RTIs) continue to present major health, social, and economic problems worldwide, and their complications are the most important causes of morbidity and mortality for women, especially in developing countries. Interest in RTIs and their management has increased tremendously because the presence of a RTI in the sexual partner increases the risk of acquisition of HIV. AIMS: The aim of this study is to know the prevalence of RTIs, its correlation with clinical features and associated risk factors in women of reproductive age group attending a tertiary care center in Lucknow. MATERIALS AND METHODS: The present study was conducted on 318 women of the reproductive age group (18-45 years) attending the RTI/sexually transmitted infection clinic at our center; they were evaluated for the prevalence of following RTIs: Chlamydia, gonorrhea, syphilis, bacterial vaginosis, trichomoniasis, and candidiasis; their correlation with clinical features and associated risk factors. RESULTS: The prevalence of reproductive tract infections in women attending our centre reported 9.7%. The prevalence of candidiasis was maximum (11.5%) followed by chlamydia (4.1%), syphilis (4.1%), bacterial vaginosis (1.73%), and trichomoniasis (0.57%). None of the women were found positive for gonorrhea. The most common presentation was genital discharge (52.8%) followed by lower abdominal pain (45.2%). CONCLUSION: The factors found to be significantly associated with RTI were illiteracy (P < 0.05), unemployment (P < 0.05), history of RTI in patient (P = 0.001), and the presence of RTI in their partner (P < 0.05). The genital discharge was the most common presentation.

14.
J Contemp Dent Pract ; 19(11): 1301-1305, 2018 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-30602631

RESUMEN

AIM: To compare the intraoral gothic tracing method with panoramic radiographs in patients requiring complete dentures. MATERIALS AND METHODS: The present study was conducted on 20 edentulous subjects of both genders. Hanau Wide-Vue semi-adjustable articulator was used to record sagittal condylar guidance in all patients. Panoramic radiographs were taken in all patients and Frankfurt horizontal plane was traced on both sides of orthopantomogram (OPG) and second plane was marked by joining the most superior and most inferior point on the glenoid fossa curvature. Frankfort's horizontal plane was crossed with this line to record radiographic condylar guidance angle. NNT software was used to record the condylar guidance angle. RESULTS: Mean ± standard deviation (SD) clinical SCG (25.15 ± 3.24) and radiographic seismocardiography (SCG) (27.54± 5.01) was non significant (p > 0.05) on left side. Mean ± standard deviation (SD) clinical SCG (26.84 ± 3.69) and radiographic SCG (29.3 5 ± 4.58) was significant (p < 0.05) on right side. The SCG did not show difference in values recorded by both methods on both sides. The difference in values in both sides by clinical method and radiographic method was non-significant (p > 0.05). CONCLUSION: There was correlation between sagittal condylar guidance obtained by both intraoral gothic arch method as well as radiographic method done on digital panoramic radiographs. CLINICAL SIGNIFICANCE: Correct centric jaw relation determines the success of the complete denture. Radiographic and clinical methods provide sufficient minute details necessary for the betterment of management.


Asunto(s)
Dentadura Completa , Registro de la Relación Maxilomandibular/métodos , Cóndilo Mandibular , Boca Edéntula/diagnóstico por imagen , Boca Edéntula/rehabilitación , Radiografía Dental , Radiografía Panorámica , Femenino , Humanos , Masculino
15.
J Food Sci Technol ; 54(2): 342-348, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28242933

RESUMEN

The size distribution assessment of unreduced wheat gluten proteins of commercial Indian wheat varieties was examined using Size-Exclusion Fast Protein Liquid Chromatography. Elution profiles were fractionated into five peaks, with the molecular weights of eluting peaks as 130-30, 55-20, 28-10 and <10 kDa (IV and V), respectively. Peak I (glutenins) and II (gliadins) exhibited contrary results with AWRC (r = 0.928** and r = -0.831**), R/E ratio (r = 0.745** and r = -0.869**), gluten index (r = 0.959** and r = -0.994**), gliadin/glutenin ratio (r = -0.952** and r = 0.948**), dough development time (r = 0.830** and r = -0.930**), dough stability (r = 0.901** and r = -0.979**) and dough weakening (r = -0.969** and r = 0.986**). Significant statistical correlation was also observed for peak I and II with cookie hardness (r = 0.948** and r = -0.924**) and cookie spread (r = -0.837** and r = -0.743**) respectively. Peak III, IV and V occupied a minor fraction of whole and did not exhibit a statistically significant correlation with any of the quality parameters.

16.
J Food Sci Technol ; 53(6): 2695-704, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27478225

RESUMEN

Unreduced gluten proteins of Indian wheat varieties viz.C306, DBW16, HI977 and HW2004 were separated using size-exclusion chromatography (SEC). Statistical correlation of area % of eluted peaks with properties of flour, dough and noodles was elucidated. Chromatograms of gluten proteins were classified primarily into five peaks in decreasing molecular size range and relative proportion were expressed in terms of area % of individual peaks which depicts the quantitative variation in protein eluted at different retention times. Cooking time and cooked weight of noodles depicted positive correlation with peak I and negative correlation with peak II which predominantly composed of glutenins and gliadins, respectively. Oil uptake and cooking loss were negatively association with peak I and positively with peak II. Noodle hardness, springiness, cohesiveness and chewiness were positively correlated with peak I and negatively to peak II, though adhesiveness was unaffected by SEC eluted peaks statistically.

17.
Food Chem ; 210: 325-31, 2016 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-27211654

RESUMEN

A statistical correlation was established among the molecular weight distribution patterns of unreduced gluten proteins and physicochemical, rheological and bread-making quality characteristics of wheat varieties. Size exclusion chromatography fractionated the gluten proteins apparently into five peaks. Peak I signified glutenins (30-130kDa), peak II as gliadins (20-55kDa), peak III as very low molecular weight monomeric gliadins (10-28kDa), peak IV and V, collectively, as albumins and globulins (<10kDa). Peaks I and II had appreciable effects on dough development time (r=0.830(∗∗) and r=-0.930(∗∗)) and dough stability (r=0.901(∗∗) and r=-0.979(∗∗)). Peak I was associated with R/E ratio (r=0.745(∗∗)), gluten index (r=0.959(∗∗)), and gliadin/glutenin ratio (r=-0.952(∗∗)), while peak II influenced inversely as expected. Peak I exhibited positive statistical significance with bread loaf volume (r=0.848(∗∗)); however, peak II had negative (r=-0.818(∗∗)) impact. Bread firmness increased with increment in peak II (r=0.625(∗∗)), and decreased with accretion in peak I (r=-0.623(∗∗)).


Asunto(s)
Pan/análisis , Gliadina/química , Glútenes/química , Peso Molecular
18.
Food Chem ; 199: 28-35, 2016 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-26775940

RESUMEN

Size exclusion chromatography (SEC) was used to characterize molecular weight distribution pattern of gluten proteins of four Indian commercial wheat varieties in order to elucidate their influence on flour physicochemical, dough rheology and quality characteristics of chapatti. SEC profile of a wheat variety was segregated into five domains: peak I (130-30 kDa; glutenins), peak II (55-20 kDa; gliadins), peak III (28-10 kDa; low molecular weight gliadins), peak IV and V (<10 kDa; albumins and globulins). SEC results indicated that R/E ratio (r=0.745(∗∗) and r=-0.869(∗∗)), gluten index (r=0.959(∗∗) and r=-0.994(∗∗)), dough development time (r=0.830(∗∗) and r=-0.930(∗∗)) and dough stability (r=0.901(∗∗) and r=-0.979(∗∗)) were positively and negatively altered by peak I and II, respectively. Peak I (r=0.879(∗∗) and r=-0.981(∗∗)) and peak II (r=-0.744(∗∗) and r=0.995(∗∗)) substantially influenced the chapatti hardness and overall score, respectively.


Asunto(s)
Glútenes/química , Triticum/química , Cromatografía en Gel , Gliadina/química , Peso Molecular , Reología
19.
Pharmacogn Rev ; 5(9): 96-102, 2011 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22096323

RESUMEN

Ficus hispida (FH) Linn. is a moderate sized tree found throughout the year and is grown wild or cultivated for its edible fruits and folklore value. Traditionally, different parts of the plant have been used in the treatment of ulcers, psoriasis, anemia, piles jaundice, vitiligo, hemorrhage, diabetes, convulsion, hepatitis, dysentery, biliousness, and as lactagogue and purgative. FH contains wide varieties of bioactives from different phytochemical groups like alkaloids, carbohydrates, proteins and amino acids, sterols, phenols, flavonoids, gums and mucilage, glycosides, saponins, and terpenes. Various scientific works have been published to establish the scientific basis of traditional medicinal values attributed to FH. Furthermore, newer pharmacological activities like antineoplastic, cardioprotective, neuroprotective and anti-inflammatory effects were also reported recently. Till now, no work has been published to elaborate the pharmacognostic features of FH Linn. The present review is, therefore, an effort to give a detailed account on its pharmacognosy and phytochemistry, and an extensive survey on its pharmacological activities. Moreover, we are trying to establish the mechanism of action behind its earlier reported pharmacology. The review also looks at the future formulation based delivery approaches of its lipophilic bioactives, which is done to enhance its dissolution so as to increase its bioavailability, and thus the associated pharmacological action.

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