Antimicrobial properties of chitosan (CH) coatings and CH enriched with bioactive compounds (BC) essential oils (EO) were determined by in vitro vivo assays on minimally processed broccoli. The efficiency plus BC/EO improving the safety broccoli was tested against native microflora. Also, its effects survival Escherichia coli Listeria monocytogenes inoculated evaluated. In performed tea tree, rosemary, pollen propolis demonstrated significant inhibitory E. L. counts while pomegranate...

Edible films can be used as carriers for antimicrobial compounds to assure food safety and quality; in addition, pathogenesis of bacteria is related a cell communication mechanism called quorum sensing (QS). Oregano essential oil (OEO) has proved useful antimicrobial; however, its applications compromised by the volatile character active constituents. Therefore, formulation edible containing OEO an alternative improve usages. QS inhibitory activity pectin-OEO was evaluated using...

Abstract Quorum sensing ( QS ) is a bacterial communication mechanism that depends on population density. inhibitory activity of four bioactive agents and two essential oils was evaluated using the bacteria model Chromobacterium violaceum . On other hand, antimicrobial tested foodborne pathogens, Listeria monocytogenes Escherichia coli Agents were able to inhibit violacein production, being tea tree rosemary more effective than propolis pollen, resveratrol pomegranate. Tea oils, applied at...

Abstract BACKGROUND Pulsed light ( PL ) treatments stand as an alternative for the shelf‐life extension of fresh‐cut products. The antimicrobial effects are well known; however, its influence on quality attributes needs to be assessed. This study was aimed at evaluating application in combination with pectin‐based edible coatings enriched dietary fiber preservation apples. RESULTS Dipping apples ascorbic acid/calcium chloride solution prior pectin coating and effective minimize browning...

Novel pectin-based, antifungal, edible coatings (ECs) were formulated by the addition of natural extracts or essential oils (EOs), and their ability to control green mold (GM), caused Penicillium digitatum, preserve postharvest quality ‘Valencia’ oranges was evaluated. Satureja montana, Cinnamomum zeylanicum (CN), Commiphora myrrha (MY) EOs, eugenol (EU), geraniol (GE), vanillin, propolis extract selected as most effective antifungal agents against P. digitatum in vitro assays....

Little information is available regarding the effect of dietary fibers added into edible coatings on quality attributes ready-to-eat fruits. The aim this study was to evaluate effects sodium alginate (AL) and chitosan (CH) enriched with four different (apple fiber, orange inulin oligofructose) microbiological, nutritional, physico-chemical sensorial properties fresh blueberries stored for 18 days at 5 °C.The most encouraging results were found CH (with without fibers) which significantly...

Combination of oregano and rosemary essential oils (EOs) was proposed to obtain a better antimicrobial antioxidant effect on fresh-cut broccoli compared the use individual oils. In in vitro assays, EOs combinations (oregano + rosemary) were more effective inhibit growth Escherichia coli O157:H7, Salmonella Choleraesuis, Listeria monocytogenes, Staphylococcus aureus doses. Oregano EO showed higher power tested by DPPH TEAC methods. Moreover, (concentrations 0.24 0.91 mg/ml) added within...

Quorum sensing (QS) is a bacterial communication mechanism that depends on population density. The interruption of QS one example an antipathogenic effect. We investigated the anti-QS and antimicrobial properties essential oils from Argentina: Salvia officinalis, Minthostachys mollis, Satureja odora, Schinus molle, Lepechinia floribunda Artemisia annua. Anti-QS activity was determined by measuring production violacein in Chromobacterium violaceum through UV–visible spectrophotometry minimal...

Abstract Apple fiber (2g/L) was incorporated along with vanillin (2.5g/L) and geraniol (0.6mL/L) into gellan coatings their effects on the microbiological, physicochemical, nutritional sensory quality of fresh‐cut apple (12 days at 5±1 °C) were studied. Also, impact evolution Escherichia coli O157:H7 Listeria innocua inoculated apples evaluated. Geraniol enhanced antioxidant properties allowed growth rate reduction native microbiota. Vanillin minimized color changes, improved firmness,...

Glycoprotein IIb (GPIIb) is a major glycoprotein of the human platelet plasma membrane, which together with IIIa (GPIIIa) forms Ca2(+)-dependent heterodimer, GPIIb/IIIa, serves as fibrinogen receptor in activated platelets. The precise localization epitopes for six anti-GPIIb monoclonal antibodies (M1-M6) has been determined by combination enzymic and chemical cleavage procedures, peptide isolation, N-terminal sequence analysis, synthesis enzyme immunoassay. following localizations were...

The impact of individual and combined application propolis extract (PE) plus ultrasound (ULT) or thermal treatment (TT) on the microbiological, nutritional, physicochemical sensory quality fresh-cut mixed vegetables for soup (celery, leek butternut squash) stored at 5C was studied. use PE slightly reduced microbial growth, inhibited activity browning related enzymes improved attributes during refrigerated storage. Moreover, effective to reduce ascorbic acid losses in product maintaining its...

Concrete structural features of integrin αIIbβ3 on the surface platelets (at rest and after activation) have been obtained from epitope maps based cross-competition among monoclonal antibodies directed against αIIb subunit calf-2 domain β3 βA αIIbβ3. At rest, observed intersubunit interface is formed by sequence stretches β3-(150–216), light chain-(1–92), heavy chain-(826–856); interchain two latter stretches, disulfide-bonded between chain Cys826 Cys9. These agree with those in rudimentary...

Abstract In this work, the combined effect of bioactive compounds (tea tree essential oil, propolis extract and gallic acid) storage temperature (15 5C) on microbiological sensory quality fresh‐cut celery, leek butternut squash was studied. It confirmed that a good control refrigeration limits growth spoilage pathogenic microorganisms. Tea oil showed significant effectiveness in controlling microbiota present vegetables. Also, both endogenous E scherichia coli inoculated . O157:H7 counts...

The combined effects of bioactive agents (tea tree essential oil, propolis extract and gallic acid) storage temperature on the microbiological sensory quality fresh-cut mixed vegetables for soup (celery, leek butternut squash) were studied with objective preserving its safety.Refrigeration was confirmed as main factor to limit growth spoilage pathogenic microorganisms. Biopreservatives applied effective only when optimal refrigeration (5 °C). Bioactive compounds showed slight effectiveness...

Enzymatic senescence processes and browning of fresh cut vegetables negatively affect their sensory properties nutritional value finally result in the rejection affected products by consumers. In order to prevent quality decay, combined effects natural antioxidants storage temperature on peroxidase activity attributes (overall visual quality, odor) individual mixed for soup (butternut squash, leek celery) were evaluated. Fresh treated with antioxidant solutions as tea tree essential oil (15...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRotational mobility of the fibrinogen receptor glycoprotein IIb/IIIa or integrin .alpha.IIb.beta.3 in plasma membrane human plateletsJ. Gonzalez-Rodriguez, A. U. Acuna, M. V. Alvarez, and T. JovinCite this: Biochemistry 1994, 33, 1, 266–274Publication Date (Print):January 11, 1994Publication History Published online1 May 2002Published inissue 11 January...