U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject alginates Remove constraint Subject: alginates Subject antioxidant activity Remove constraint Subject: antioxidant activity Subject ascorbic acid Remove constraint Subject: ascorbic acid
Start Over

Search

16  Search Results

1 - 16 of 16
Number of results to display per page

Search Results

1. Edible coatings with antibrowning agents to maintain sensory quality and antioxidant properties of fresh-cut pears

Author:
Oms-Oliu, G.; Soliva-Fortuny, R.; Martín-Belloso, O.
Source:
Postharvest biology and technology 2008 v.50 no.1 pp. 87-94
ISSN:
0925-5214
Subject:
pears; edible films; coatings; antioxidant activity; fruit quality; food processing quality; fruit composition; food preservatives; fresh-cut foods; phenolic compounds; ascorbic acid; vitamin content; alginates; pectins; acetylcysteine; glutathione; sensory properties; microbiological quality; microbial growth; gas exchange; ethylene production; firmness; water vapor; enzymatic browning
Abstract:
... The effect of alginate-based (2%, w/v), pectin-based (2%, w/v) and gellan-based (0.5%, w/v) edible coatings containing N-acetylcysteine at 0.75% (w/v) and glutathione at 0.75% (w/v) on gas exchange, antioxidant properties, sensory quality and microbial stability of fresh-cut 'Flor de Invierno' pears, was investigated for 14 d at 4°C. The use of polysaccharide-based edible coatings increased the wa ...
DOI:
10.1016/j.postharvbio.2008.03.005

2. Effect of molecular weight on the antioxidant property of low molecular weight alginate from Laminaria japonica

Author:
Xue Zhao; Bafang Li; Changhu Xue; Liping Sun
Source:
Journal of applied phycology 2012 v.24 no.2 pp. 295-300
ISSN:
0921-8971
Subject:
Saccharina japonica; alginates; antioxidant activity; ascorbic acid; carnosine; enzymatic hydrolysis; free radicals; lipid peroxidation; molecular weight; oxygen; ultrafiltration
Abstract:
... In this study, three alginate fractions with different molecular weights and ratios of mannuronic acid (M) to guluronic acid (G) were prepared by enzymatic hydrolysis and ultrafiltration to assess the antioxidant property of alginates from Laminaria japonica with molecular weight below 10 kDa. The antioxidant properties of different molecular weight alginates were evaluated by determining the scav ...
DOI:
10.1007/s10811-011-9679-y

3. Еvaluation of biocompatibility and antioxidant efficiency of chitosan-alginate nanoparticles loaded with quercetin

Author:
Denitsa Aluani; Virginia Tzankova; Magdalena Kondeva-Burdina; Yordan Yordanov; Elena Nikolova; Feodor Odzhakov; Alexandar Apostolov; Tzvetanka Markova; Krassimira Yoncheva
Source:
International journal of biological macromolecules 2017 pp. -
ISSN:
0141-8130
Subject:
alginates; antioxidant activity; antioxidants; ascorbic acid; biocompatibility; biopolymers; body weight; chitosan; encapsulation; hematology; hepatocytes; histology; human cell lines; iron; lipid peroxidation; liver; lymphocytes; macrophages; mice; microsomes; models; nanoparticles; oral administration; oxidative stress; protective effect; quercetin; rats; spleen
Abstract:
... The present study deals with development and evaluation of the safety profile of chitosan/alginate nanoparticles as a platform for delivery of a natural antioxidant quercetin. The nanoparticles were prepared by varying the ratios between both biopolymers giving different size and charge of the formulations. The biocompatibility was explored in vitro in cells from different origin: cultivated HepG2 ...
DOI:
10.1016/j.ijbiomac.2017.05.062

4. Effect of chitosan and alginate based coatings enriched with pomegranate peel extract to extend the postharvest quality of guava (Psidium guajava L.)

Author:
M. Sneha Nair; Alok Saxena; Charanjit Kaur
Source:
Food chemistry 2018 v.240 pp. 245-252
ISSN:
0308-8146
Subject:
2,2-diphenyl-1-picrylhydrazyl; Psidium guajava; alginates; antioxidant activity; ascorbic acid; cell respiration; chitosan; coatings; color; flavonoids; fruit quality; guavas; phytopharmaceuticals; pomegranates; ripening; storage quality
Abstract:
... 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 wi ...
DOI:
10.1016/j.foodchem.2017.07.122

5. Layer‐by‐Layer Alginate and Fungal Chitosan Based Edible Coatings Applied to Fruit Bars

Author:
Cristina Bilbao‐Sainz; Bor‐Sen Chiou; Kaylin Punotai; Donald Olson; Tina Williams; Delilah Wood; Victor Rodov; Elena Poverenov; Tara McHugh
Source:
Journal of food science 2018 v.83 no.7 pp. 1880-1887
ISSN:
0022-1147
Subject:
alginates; animals; anions; antioxidant activity; ascorbic acid; biopolymers; cations; chitin; chitosan; coatings; edible films; firmness; food waste; fruits; industrial applications; microbial growth; mushrooms
Abstract:
... Food waste is currently being generated at an increasing rate. One proposed solution would be to convert it to biopolymers for industrial applications. We recovered chitin from mushroom waste and converted it to chitosan to produce edible coatings. We then used layer‐by‐layer (LbL) electrostatic deposition of the polycation chitosan and the polyanion alginate to coat fruit bars enriched with ascor ...
DOI:
10.1111/1750-3841.14186

6. Ecofriendly extraction of bioactive fractions from Sargassum muticum

Author:
María P. Casas; Enma Conde; Herminia Domínguez; Andrés Moure
Source:
Process biochemistry 2019 v.79 pp. 166-173
ISSN:
1359-5113
Subject:
Sargassum muticum; algae; alginates; antioxidant activity; ascorbic acid; cytotoxicity; enzymatic treatment; enzyme activity; enzymes; feedstocks; fibroblasts; humans; melanoma; mice; solubilization; ultrasonics; unsaturated fatty acids
Abstract:
... An ecofriendly process based on an enzyme-assisted extraction coupled with ultrasound extraction was proposed to obtain soluble bioactive fractions from Sargassum muticum. Whole algae (Sm) and residual algae from alginate production (AESm) were employed as feedstock. Aqueous enzyme treatment with commercial complex enzyme formulations or with mixture of enzymes lead to maximum solubilization yield ...
DOI:
10.1016/j.procbio.2018.12.021

7. Effect of Alginate and Chitosan Edible Coating Enriched with Olive Leaves Extract on the Shelf Life of Sweet Cherries (Prunus avium L.)

Author:
Wissam Zam
Source:
Journal of food quality 2019 v.2019 pp. -
ISSN:
0146-9428
Subject:
2,2-diphenyl-1-picrylhydrazyl; Olea europaea; Prunus avium; alginates; anthocyanins; antioxidant activity; ascorbic acid; chitosan; edible coatings; edible films; fruits; leaf extracts; olives; ripening; shelf life; storage time; transpiration
Abstract:
... Edible film coatings are widely used as a protective barrier for the reduction of transpiration and respiration, therefore reducing the ripening process in fruits and vegetables and improving their quality. The influence of chitosan 1% and alginate 3% enriched with olive leaves extract (OLE) on the quality of sweet cherries was studied. Overall, the ripening process and the increase in anthocyanin ...
DOI:
10.1155/2019/8192964

8. Development and characterization of controlled released polyphenol rich micro‐encapsulate of Murraya koenigii bark extract

Author:
Vikas Dadwal; Shriya Bhatt; Robin Joshi; Mahesh Gupta
Source:
Journal of food processing and preservation 2020 v.44 no.5 pp. e14438
ISSN:
0145-8892
Subject:
Bergera koenigii; alginates; antioxidant activity; ascorbic acid; bark; bioavailability; calcium; calcium chloride; chitosan; cinnamic acid; electrodes; food industry; foods; freeze drying; fruit pulp; fruits; gels; intestines; leaves; microencapsulation; myricetin; oxidation; pH; particle size distribution; plant extracts; polyphenols; rheological properties; rheology; scanning electron microscopy; temperature; ultra-performance liquid chromatography
Abstract:
... Electrostatic extrusion‐based microencapsulation technique is recognized for improving delivery, stability, and bioavailability of polyphenols. In the present study, extracts of Murraya koenigii (L.) Spreng., bark, fruit pulp, fruit seed, and leaves were analyzed for polyphenolic content. Bark extract exhibited maximum phenolics (98.96 ± 0.95 µg GAE/mg), flavonoids (24.05 ± 1.52 µg RU/mg), and ant ...
DOI:
10.1111/jfpp.14438

9. Enhancement of β‐carotene‐rich carotenoid production by a mutant Sporidiobolus pararoseus and stabilization of its antioxidant activity by microencapsulation

Author:
Atchara Manowattana; Charin Techapun; Thunnop Laokuldilok; Yuthana Phimolsiripol; Thanongsak Chaiyaso
Source:
Journal of food processing and preservation 2020 v.44 no.8 pp. e14596
ISSN:
0145-8892
Subject:
Sporidiobolus; alginates; animals; antioxidant activity; ascorbic acid; biomass; cosmetics; ethyl methanesulfonate; half life; irradiation; microencapsulation; mutagenesis; mutants; oxygen; white light; yeasts
Abstract:
... The effective enhancement of β‐carotene production by Sporidiobolus pararoseus KM281507 was successfully achieved by random mutagenesis using ethyl methanesulfonate (EMS) combined with light irradiation. The mutant S. pararoseus E47 obtained from EMS mutagenesis produced a promising yield of biomass, β‐carotene, and total carotenoids under white light (1,000 Lux). The maximal biomass (19.76 g/L), ...
DOI:
10.1111/jfpp.14596

10. The Effect of Alginate-Based Edible Coating Enriched with Citric Acid and Ascorbic Acid on Texture, Appearance and Eating Quality of Apple Fresh-Cut

Author:
Solaleh Najafi Marghmaleki; Seyed Mohammad Hassan Mortazavi; Hassan Saei; Ahmad Mostaan
Source:
International journal of fruit science 2021 v.21 no.1 pp. 40-51
ISSN:
1553-8621
Subject:
alginates; antioxidant activity; antioxidants; apples; ascorbic acid; calcium; chewiness; citric acid; color; decline; electrolyte leakage; fruits; gels; hardness; microbial load; taste; texture; weight loss
Abstract:
... Incorporating antibrowning agents into the edible coating is a conventional processing technique for fresh-cut preparation. The main quality attributes of fresh-cuts, i.e., appearance color, taste and texture may be affected by coating formulation and its additives at different and sometime contradictory rates. In this study, the impacts of using alginate coating alone or in combination with citri ...
DOI:
10.1080/15538362.2020.1856018

11. Influence of Different Types of Polysaccharide-Based Coatings on the Storage Stability of Fresh-Cut Kiwi Fruit: Assessing the Physicochemical, Antioxidant and Phytochemical Properties

Author:
Ishrat Guroo; Amir Gull; Sajad Mohd Wani; Sajad Ahmad Wani; Asma A. Al-Huqail; Jwaher Haji Alhaji
Source:
Foods 2021 v.10 no.11 pp. -
ISSN:
2304-8158
Subject:
alginates; ambient temperature; antioxidant activity; antioxidants; ascorbic acid; biopolymers; chitosan; chlorogenic acid; ellagic acid; epicatechin; kiwifruit; lipid peroxidation; phenolic compounds; relative humidity; shelf life; titratable acidity; xanthan gum
Abstract:
... The present study focuses on studying the influence of various edible biopolymer coatings at several concentrations on physicochemical, antioxidant and lipid peroxidation activity levels of biopolymer-coated fresh-cut kiwi slices stored at room temperature (relative humidity: 90%). Kiwi slices were coated by dipping in xanthan gum (0.1, 0.2, 0.3% w/v), alginate (1, 2, 3% w/v) and chitosan (0.25, 0 ...
DOI:
10.3390/foods10112806

12. Production of exopolymer substances from the thermophilic chlorophyte Graesiella: industrial and ecological applications

Author:
Wejdene Gongi; Nereida Cordeiro; Juan Luis Gómez Pinchetti; Hatem Ben Ouada
Source:
Journal of applied phycology 2021 v.33 no.1 pp. 343-356
ISSN:
0921-8971
Subject:
Fusarium oxysporum; Vibrio; alginates; algology; antimicrobial properties; antioxidant activity; ascorbic acid; biomass production; corn oil; emulsifying; flocculation; fungal growth; hexane; hydrophobicity; kaolin; microalgae; molecular weight; mycelium; polysorbates; spore germination; viability
Abstract:
... Microalgal extracellular polymeric substances (EPSs) are heteropolysaccharides that have characteristics suitable for industrial and biotechnological applications. Notably, they have strong anionic nature and high hydrophobicity. Nevertheless, systematic studies to demonstrate the viability of the production of EPSs on an industrial scale are still crucial. In this research, the chlorophyte Graesi ...
DOI:
10.1007/s10811-020-02299-7

13. Profiling of bioactives and in vitro evaluation of antioxidant and antidiabetic property of polyphenols of marine algae Padina tetrastromatica

Author:
Jayapala Naveen; Revathy Baskaran; Vallikannan Baskaran
Source:
Algal research 2021 v.55 pp. 102250
ISSN:
2211-9264
Subject:
Padina; alginates; alpha-amylase; antioxidant activity; antioxidants; ascorbic acid; bioactive compounds; carotenoids; danshensu; dietary supplements; fucoidan; genistein; hydrocolloids; luteolin; macroalgae; mass spectrometry; methanol; methyl palmitate; phospholipids; polyphenols; quercetin; research; rosmarinic acid
Abstract:
... This study aimed to characterize and quantify the phenolics, hydrocolloids, lipids and carotenoids and to study antioxidant and antidiabetic property of phenolics of marine brown algae Padina tetrastromatica. Extraction using 1% acidic methanol yielded 3.6mg/g total polyphenol, 2.86mg/g flavonoid and 21.8μg/g tannin. Ultra high performance liquid chromatography-high resolution mass spectrometry/ma ...
DOI:
10.1016/j.algal.2021.102250

14. Alginate‐based coatings charged with hydroxyapatite and quercetin for fresh‐cut papaya shelf life

Author:
Angela Michela Immacolata Montone; Francesca Malvano; Phuong Ly Pham; Luciano Cinquanta; Rosanna Capparelli; Federico Capuano; Donatella Albanese
Source:
International journal of food science & technology 2022 v.57 no.8 pp. 5307-5318
ISSN:
0950-5423
Subject:
alginates; antioxidant activity; ascorbic acid; carotenoids; cold storage; food science; glycosides; hydroxyapatite; microbiological quality; quercetin; sensory evaluation; shelf life; storage time
Abstract:
... In this study, the effect of alginate‐based coatings charged with quercetin glycoside compounds and hydroxyapatite/quercetin glycoside compounds (HA/QUE) on the microbiological quality, and on bioactive compounds of fresh‐cut papaya, was evaluated for 14 days at 6 °C. Alginate coatings with hydroxyapatite/quercetin showed a high capability to slow down the growth of all microbiological parameters ...
DOI:
10.1111/ijfs.15860

15. Effect of Alginate Edible Coatings Enriched with Black Cumin Extract for Improving Postharvest Quality Characteristics of Guava (Psidium guajava L.) Fruit

Author:
Kamrul Hasan; Rakibul Islam; Mehedi Hasan; Sazzat Hossain Sarker; Mehedi Hasan Biswas
Source:
Food and bioprocess technology 2022 v.15 no.9 pp. 2050-2064
ISSN:
1935-5130
Subject:
Escherichia coli; Nigella sativa; Psidium guajava; Staphylococcus hominis; alginates; antibacterial properties; antioxidant activity; antioxidants; ascorbic acid; bioprocessing; carotenoids; cell respiration; color; dose response; firmness; flavonoids; fruits; guavas; ingredients; relative humidity; shelf life; storage time; weight loss
Abstract:
... The influence of alginate edible coatings enriched with black cumin (BC) extract was investigated to preserve the quality of guava fruits for 16 days at 11 ± 1 °C and 85 ± 2% relative humidity. The analysis of polyphenolic compounds in BC extract confirmed the TPC (28.43 ± 1.11 mg GAE/g DM) and TFC (4.83 ± 0.17 mg QE/g DM) with strong antioxidant activity (161.69 ± 2.31 µM Trolox/g DM in DPPH and ...
DOI:
10.1007/s11947-022-02869-2

16. Loquat leaf extract and alginate based green composite edible coating for preserving the postharvest quality of Nanfeng tangerines

Author:
Yajie Zhang; Yuting Shen; Chuying Chen; Zengyu Gan; Jinyin Chen; Chunpeng (Craig) Wan
Source:
Sustainable chemistry and pharmacy 2022 v.27 pp. 100674
ISSN:
2352-5541
Subject:
Citrus; Penicillium digitatum; alginates; antioxidant activity; ascorbic acid; biocomposites; cell respiration; cold storage; flavonoids; fruits; fungi; green chemistry; hyphae; leaf extracts; leaves; loquats; minimum inhibitory concentration; postharvest diseases; sensory properties; storage quality; storage time; tangerines; weight loss
Abstract:
... The present study was designed to investigate the preventive effect of loquat leaf (LL) based green extract combined with alginate-based composite against fungal infection in Nanfeng tangerine fruit. The sensory quality, physiological, and biochemical characteristics of postharvest citrus were estimated after the treatment. Results showed that LL extract's minimum inhibitory concentration (MIC) an ...
DOI:
10.1016/j.scp.2022.100674