Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 12 de 12
Filtrar
1.
Int J Food Sci ; 2024: 7127635, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38690179

RESUMO

Gummies belong to a confectionery category characterized by a hydrocolloid, acting as a stabilizer, forming a network to retain a high-moisture sugar syrup, and hydrocolloids play a key role in shaping the visual appeal, flavour release, and texture of the gel network. This study investigates the potential substitution of gelatin in gummies with plant-based hydrocolloids like agar-agar and guar gum. It is also aimed at optimizing the level of functional ingredients like curcumin and piperine in standardized gummies through incorporation of turmeric and black pepper, respectively. These plant-based gelling agents mimic gelatin's chewable, firm, and elastic texture, catering to broader consumption and suitability for versatile use. Consumer interest in healthier diets has spurred the transition towards plant-based functional foods, leading to the replacement of gelatin gummies with plant-based alternatives. Agar-agar significantly influences gummy texture by contributing to firmness, elasticity, and stable gel formation, imparting essential strength and consistency. Guar gum, recognized as a plant-based hydrocolloid, enhances gummy texture, consistency, and moisture retention through thickening and stabilization. While agar-agar and guar gum individually fell short in achieving the desired textural attributes in the gummies, their combined use (1% agar-agar and 5.5% guar gum) yielded optimal chewiness (1,455.12 ± 1.75 N), gumminess (2251.11 ± 2.14 N), and high overall acceptability (8.96), resembling gelatin-based gummies. The optimized formulation included 40% sugar, 2% citric acid, 2% turmeric, and 0.6% black pepper. The developed vegan gummies contained 56.9 ± 0.09 mg/100 g total phenols, 37.27 ± 1.4% antioxidant capacity, 0.054 ± 0.0012% curcumin, and 0.02 ± 0.008% piperine. Consequently, the combined use of agar-agar and guar gum emerged as stable and effective gelling agents, offering an alternative to gelatin for creating turmeric and black pepper-infused gummies with desirable texture and functional attributes.

2.
Mol Nutr Food Res ; 67(19): e2300221, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37552810

RESUMO

Despite of strides in modern cancer therapeutic strategies, there has not been a successful cure for it until now and prognostic side effects and substantial toxicity to chemotherapy and subsequent homeostatic imbalance remains a major concern for professionals in this field. The significance of the human microbiome in the pathogenesis of cancer is being recognized, documented, and established worldwide. Probiotics and prebiotics are some of the most extensively researched approaches to modulate the microbiota for therapeutic purposes, and research on their potential to prevent and treat cancer has sparked an immense amount of interest. The characteristics of probiotics and prebiotics allow for an array of efficient applications in cancer preventive measures. Probiotics can also be administered coupled with chemotherapy and surgery to alleviate their side effects and help promote the effectiveness of chemotherapeutic drugs. Besides showing promising results they are accompanied by potential risks and controversies that may eventually result in clinical repercussions. This review emphasizes the mechanistic potential and oncosuppressive effects of probiotic and prebiotics through maintenance of intestinal barrier function, modifying innate immune system, immunomodulation, intestinal microbiota metabolism, inhibition of host cell proliferation, preventing pathogen colonization, and exerting selective cytotoxicity against tumor cells.

3.
Biochim Biophys Acta Rev Cancer ; 1878(5): 188956, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37473857

RESUMO

The microbiota is garnering progressively greater consideration as an essential facet of the tumor microenvironment that regulates tumor proliferation and affects cancer prognosis. Microbial populations that inhabit different body locations are involved in the carcinogenesis and tumor progression of their corresponding malignancies. It has been learned that the microbial populations primarily thriving within tumors are tumor-type specific. Mechanistic studies have revealed that the tumor-associated microbiota contributes to playing a pivotal role in the establishment of the tumor microenvironment, regulation of local immunity, modulation of tumor cell biology, and directly influences the therapeutic efficacy of drug treatment for tumors. This review article incorporates the pertinent studies on recent advancements in tumor microbiome studies, the interplay between the intratumor microbiota and cancer, and, discusses their role and mechanism of action in the emergence and treatment of cancer, and their relationship to clinical characteristics.


Assuntos
Microbiota , Neoplasias , Microambiente Tumoral , Neoplasias/diagnóstico , Neoplasias/epidemiologia , Neoplasias/microbiologia , Neoplasias/terapia , Humanos , Animais , Carcinogênese , Mutação , Bactérias/classificação , Biomarcadores Tumorais/análise
4.
Curr Top Med Chem ; 23(20): 1964-1972, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37218200

RESUMO

Alpinia malaccensis, commonly known as "Malacca ginger" and "Rankihiriya," is an important medicinal plant of Zingiberaceae. It is native to Indonesia and Malaysia and widely distributed in countries including Northeast India, China, Peninsular Malaysia and Java. Due to vide pharmacological values, it is necessary to recognize this species for its significance of pharmacological importance. This article provides the botanical characteristics, chemical compounds of vegetation, ethnopharmacological values, therapeutic properties, along with the potential pesticidal properties of this important medicinal plant. The information in this article was gathered by searching the online journals in the databases such as PubMed, Scopus, Web of Science etc. The terms such as Alpinia malaccensis, Malacca ginger, Rankihiriya, pharmacology, chemical composition, ethnopharmacology, etc., were used in different combinations. A detailed study of the available resources for A. malaccensis confirmed its native and distribution, traditional values, chemical properties, and medicinal values. Its essential oils and extracts are the reservoir of a wide range of important chemical constituents. Traditionally, it is being used to treat nausea, vomiting and wounds along with as a seasoning agent in meat processing and as perfume. Apart from traditional values, it has been reported for several pharmacological activities such as antioxidant, antimicrobial, anti-inflammatory etc. We believe that this review will help to provide the collective information of A. malaccensis to further explore it in the prevention and treatment of various diseases and help to the systematic study of this plant to utilize its potential in various areas of human welfare.


Assuntos
Alpinia , Plantas Medicinais , Zingiberaceae , Humanos , Alpinia/química , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico , Etnofarmacologia , Fitoterapia , Compostos Fitoquímicos/farmacologia , Compostos Fitoquímicos/química
5.
Glycobiology ; 2023 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-36864577

RESUMO

Altered and aberrant glycosylation signatures have been linked to being a hallmark in a variety of human disorders including cancers. Cancer stem cells, capable of self-renewal and differentiation, have recently been credited with a unique notion of disease genesis and implicated as the cause for initiation and recurrence of the disease in a new regime of neoplastic transformations hypothesis. Many biomarkers relating to diagnostic and prognostic intents have been discovered using the ubiquitous and abundant surface glycan patterns on cancer stem cells. Various technological advancements have been developed to identify and determine concerns with glycosylation structure. However, the nature and purpose of the glycan moiety on these glycosylation pattern have not yet been thoroughly investigated. This review, thus, summarises the process of glycosylation in CSCs, variations in glycosylation patterns in various stem cells, aberrant glycosylation patterns in cancer, the role of glycosylation in tumour cell adhesion, cell-matrix interactions, and signalling, as well as cancer detection and treatment. The function of carbohydrates as prospective serum biomarkers, some clinically authorized biomarkers, and potential novel biomarkers relating to cancer disease diagnosis and prognosis are also discussed in the review.

6.
Indian J Med Res ; 156(2): 339-347, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-36629194

RESUMO

Background & objectives: Zinc is a crucial micronutrient in adolescence, required for promoting growth and sexual maturation. Adolescents of some tribes may be at high risk of zinc deficiency due to dietary inadequacy and poor bioavailability of zinc from plant-based diets. This study aimed to evaluate the risk of zinc deficiency by estimating prevalence of inadequate zinc intake, prevalence of low serum zinc and stunting among tribal adolescents. Methods: A cross-sectional community-based survey was conducted among adolescents (10-19 yr) in three purposively selected districts where Bhil, Korku and Gond tribes were in majority. Structured data collection instrument comprising information about sociodemographic characteristics and dietary recall data was used. Anthropometric assessment was conducted by standardized weighing scales and anthropometry tapes, and blood sample was collected from antecubital vein into trace element-free vacutainers. Serum zinc was estimated using an atomic absorption spectrophotometer. Results: A total of 2310 households were approached for participation in the study, of which 2224 households having 5151 adolescents participated. Out of these enlisted adolescents, 4673 responded to dietary recall (90.7% response rate). Anthropometry of 2437 participants was carried out, and serum zinc was analyzed in 844 adolescents. The overall prevalence of dietary zinc inadequacy was 42.6 per cent [95% confidence interval (CI) 41.2 to 44.1] with reference to the estimated average requirement suggested by International Zinc Nutrition Consultative Group (IZiNCG) and 64.8 per cent (95% CI 63.4 to 66.2) with Indian Council of Medical Research-recommended requirements. Stunting was observed in 29 per cent (95% CI 27.2 to 30.8) participants. According to IZiNCG cut-offs, low serum zinc was detected in 57.5 per cent (95% CI 54.1 to 60.8) of adolescents, whereas it was 34.4 per cent (95% CI: 31.2-37.5) according to the national level cut-off. Interpretation & conclusions: Risk of dietary zinc inadequacy and low serum zinc concentration amongst adolescents of the Gond, Bhil and Korku tribes is a public health concern.


Assuntos
Desnutrição , Zinco , Humanos , Adolescente , Estudos Transversais , Dieta , Desnutrição/epidemiologia , Estado Nutricional , Transtornos do Crescimento/epidemiologia , Índia/epidemiologia
7.
Braz. J. Pharm. Sci. (Online) ; 58: e201209, 2022. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1420457

RESUMO

Abstract The present study describes chemical composition, phytochemicals, antifungal activities, antioxidant assays and total phenolic content of essential oil and varied polarity solvent extract from flowers of Alpinia malaccensis (Burm.f.). Total 27 components were identified in essential oil by GC-MS with terpinen-4-ol (28.6%) and α- terpineol (12.8%) as the main constituent. The essential oil was found to have maximal levels of phenolic content (64.60 µg/mL) as compared to the other extracts. The antioxidant assay evaluated in extracts and essential oil by different methods revealed good-to-moderate antioxidant potential with different IC50 values viz. (188.02 -250.25 µg/mL) in Fe3+ reducing power, (153.15-201.59 µg/mL) in Fe2+ metal-chelating ability, (130.39-181.12 µg/mL) in DPPH, (88.29-187.32 µg/mL) in OH radical, (79.04-156.79 µg/mL), in NO radical and (138.72-233.00 µg/mL) in superoxide anion scavenging activities, respectively. The methanolic extract display remarkable fungicidal activity against the tested pathogens followed by dichloromethane extract, essential oil, hexane extract and petroleum ether extract respectively, with MIC values ranging from 31.25 to 500 µg/mL. Based on results, it can be inferred that the flower of A. malaccensis if explored further for its medicinal properties, might be a good source to develop a safe and sustainable natural food preservative


Assuntos
Óleos Voláteis/análise , Extratos Vegetais/análise , Flores/classificação , Alpinia/efeitos adversos , Antifúngicos/farmacologia , Antioxidantes/farmacologia
8.
Braz. J. Pharm. Sci. (Online) ; 58: e20353, 2022. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1403686

RESUMO

Abstract Acmella uliginosa, an edible herb belonging to Asteraceae family, was collected from the Terai region of Uttarakhand, India. Methanol and hexane extracts of the whole plant were prepared using soxhlet apparatus. The GC-MS analysis of plant extracts identifies 22 and 35 major compounds of methanol and hexane extracts which comprises of 74.21% and 73.20% of the total composition of extracts, respectively. The major compound in hexane was 2, 4-heptadienal (7.99%) whereas trans, trans-9, 12-octadecadienoic acid propyl ester (16.96%) was major compound in methanol extract. The extracts were evaluated for antioxidant and anti-inflammatory properties. Methanol extract showed higher free radical scavenging and reducing power activities with IC50 value 153.82±1.69 µg/mL and RP50 value of 152.28±0.41 µg/mL, respectively. The metal chelating activity was higher in hexane extract as compared to methanol extract i.e., 62.08±0.25 µg/mL. The anti-inflammatory activity assessed by its ability to inhibit denaturation was higher in methanol having IB50 value 87.33±0.15 µg/mL. The total phenolic content (TPC), total flavonoid content (TFC) and ortho-dihydric phenol content (ODP) of methanol and hexane extracts were also evaluated. TPC, TFC and ODP was higher in methanol extract having value of 122.23±0.22, 35.01±0.29 and 8±0.86 mg/mL, respectively. Acmella uliginosa, might be considered as a natural source for antioxidant and anti-inflammatory properties


Assuntos
Extratos Vegetais/análise , Asteraceae/classificação , Metanol/análise , Hexanos/análise , Antioxidantes/classificação , Concentração Inibidora 50 , Compostos Fenólicos
9.
Mol Cell Biochem ; 347(1-2): 135-43, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20972609

RESUMO

Oxidative/nitrosative stress plays a crucial role in Parkinson's disease (PD) by triggering mitochondrial dysfunction. Nitrosative stress is mediated by reactive species such as peroxynitrite (PN) which could damage biomolecules thereby impinging on the cellular machinery. We observed that PN (0-1000 µM) inhibited brain mitochondrial complex I (CI) activity in a dose-dependent manner with concomitant tyrosine nitration of proteins. We also observed that exposure to PN at low concentrations (62.5-125 µM) significantly decreased the mitochondrial membrane potential and affected the mitochondrial integrity at higher doses (500-750 µM) as indicated by the mitochondrial swelling experiment. Therefore, it could be surmised that compounds that prevent such mitochondrial damage might have therapeutic value in neurological conditions such as PD. We previously showed that curcumin could detoxify PN and protect against CI inhibition and protein nitration. However, the therapeutic potential of curcumin is constrained by limited bioavailability. To address this issue and obtain improved antioxidants, three bioconjugates of curcumin (Di-demethylenated piperoyl, di-valinoyl and di-glutamoyl esters) were generated and tested against PN-mediated nitrosative stress and mitochondrial damage. We found that among the bioconjugates, the glutamoyl diester of curcumin showed improved protection against PN-dependent CI inhibition and protein nitration compared to other conjugates. Di-glutamoyl curcumin protected dopaminergic neurons against 1-methyl-4-phenylpyridinium (MPP(+))-mediated neuronal death. These effects were improved compared to curcumin alone suggesting that di-glutamoyl curcumin could be a better neuroprotective agent in neurodegenerative diseases such as PD.


Assuntos
Encéfalo/patologia , Curcumina/análogos & derivados , Curcumina/farmacologia , Ésteres/farmacologia , Flavonoides/farmacologia , Glutamatos/farmacologia , Mitocôndrias/patologia , Doença de Parkinson/tratamento farmacológico , Ácido Peroxinitroso/toxicidade , Fenóis/farmacologia , 1-Metil-4-fenilpiridínio , Animais , Encéfalo/efeitos dos fármacos , Encéfalo/metabolismo , Curcumina/química , Curcumina/uso terapêutico , Dieta , Complexo I de Transporte de Elétrons/metabolismo , Ésteres/química , Ésteres/uso terapêutico , Flavonoides/química , Flavonoides/uso terapêutico , Glutamatos/química , Glutamatos/uso terapêutico , Camundongos , Mitocôndrias/efeitos dos fármacos , Mitocôndrias/metabolismo , Proteínas Mitocondriais/metabolismo , Dilatação Mitocondrial/efeitos dos fármacos , Fenóis/química , Fenóis/uso terapêutico , Polifenóis , Substâncias Protetoras/farmacologia , Substâncias Protetoras/uso terapêutico , Tirosina/análogos & derivados , Tirosina/metabolismo
10.
J Agric Food Chem ; 58(11): 6594-9, 2010 Jun 09.
Artigo em Inglês | MEDLINE | ID: mdl-20465211

RESUMO

A robust and sensitive ultra-low flow liquid chromatography (UFLC) method that can reproducibly, at reasonable cost, detect low concentrations of piperine from human plasma is necessary. Piperine in plasma was separated and quantified by a gradient method using ultraviolet detection at a maximal absorbance wavelength of 340 nm. An aliquot was injected onto a reversed-phase column Waters SymmetryShield, 2.1 x 100 mm, 3.5 microm, C(18) column, attached to a Waters absorbosphere, 4.6 x 30 mm, C(18) guard column and eluted with a mobile phase containing a mixture of acetonitrile/water/acetic acid (25:74.9:0.1, v/v/v) on line A and acetonitrile/acetic acid (99.9:0.1, v/v) on line B. The flow rate was 0.3 mL/min. The gradient method consisted of an opening condition of 20% pump B, with a linear increase to 37% pump B over 8 min, then a linear increase to 100% pump B at 11 min, 2 min at 100% pump B, and then a return to the opening condition (20% pump B) via a linear gradient over 2 min, followed by 5 min re-equilibration at opening conditions. The total run time was 20 min for each sample. All samples were processed protected from ambient light to avoid isomerization of piperine. The plasma assay was linear with R = 0.9995, with a lower limit of detection [signal-to-noise (S/N) > 5:1] of 100 pg of piperine loaded into the analytical system with acceptable accuracy and precision. Extraction recoveries of piperine from human plasma were 88% for quality control high (QCH), 93% for quality control medium (QCM), and 90% for quality control low (QCL), and the matrix effect was <12%. Piperine was quantifiable from a 50 mg oral dose given to human volunteers. A UFLC method for the rapid assay of human plasma with sensitivity to detect as low as 5 ng/mL piperine was developed. The method sensitivity equals that of liquid chromatography/tandem mass spectrometry (LC/MSMS) methods with much less cost.


Assuntos
Alcaloides/sangue , Benzodioxóis/sangue , Cromatografia Líquida/métodos , Piperidinas/sangue , Alcamidas Poli-Insaturadas/sangue , Cromatografia Líquida/instrumentação , Humanos
11.
Bioorg Med Chem ; 18(7): 2631-8, 2010 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-20227282

RESUMO

Oxidative stress is implicated in mitochondrial dysfunction associated with neurodegeneration in Parkinson's disease (PD). Depletion of the cellular antioxidant glutathione (GSH) resulting in oxidative stress is considered as an early event in neurodegeneration. We previously showed that curcumin, a dietary polyphenol from turmeric induced GSH synthesis in experimental models and protected against oxidative stress. Here we tested the effect of three bioconjugates of curcumin (involving diesters of demethylenated piperic acid, valine and glutamic acid) against GSH depletion mediated oxidative stress in dopaminergic neuronal cells and found that the glutamic acid derivative displayed improved neuroprotection compared to curcumin.


Assuntos
Antioxidantes/síntese química , Curcumina/análogos & derivados , Curcumina/química , Dopamina/fisiologia , Glutationa/metabolismo , Neurônios/metabolismo , Fármacos Neuroprotetores/síntese química , Estresse Oxidativo/efeitos dos fármacos , Doença de Parkinson/tratamento farmacológico , Antioxidantes/farmacologia , Disponibilidade Biológica , Linhagem Celular , Curcumina/farmacologia , Glutationa Transferase/metabolismo , Humanos , Peróxido de Hidrogênio/metabolismo , Indicadores e Reagentes , Peroxidação de Lipídeos/efeitos dos fármacos , Modelos Moleculares , Neurônios/efeitos dos fármacos , Fármacos Neuroprotetores/farmacologia , Oxidantes/metabolismo , Espécies Reativas de Oxigênio/metabolismo
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA