Phenolic Content and Antioxidant Capacity in  Algal Food Products

Machů, Ludmila; Mišurcová, Ladislava; Ambrožová, Jarmila Vávra; Orsavová, Jana; Mlček, Jiří­; Sochor, Jiří­; Jurí­ková, Tűnde

doi:10.3390/molecules20011118

Cited by 339 publications

(256 citation statements)

References 41 publications

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“…Cyanobacteria could be one of the most potential source for the production of natural antioxidants. Phenolic acids and flavonoids from plant sources have been well-documented for their antioxidant, free-radical quenching and redox metal ion-chelating affects (Singh et al 2009(Singh et al , 2014Tutour 1990;Apati et al 2003;Hossain et al 2016) but cyanobacteria and microalgae are relatively new source for such compounds in recent years due to their potential benefits and ease of production (Guedes et al 2013;Machu et al 2015). Gallic, chlorogenic, caffeic and ferulic acids identified from plant sources have been known as strong antioxidants and free radical scavengers (Piazzon et al 2012;Babić et al 2015) but their presence in cyanobacteria is scarcely reported and this make these organisms more potential.…”

Section: Resultsmentioning

confidence: 99%

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Antioxidant properties and polyphenolic content in terrestrial cyanobacteria

et al. 2017

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Cell-free extracts of twenty terrestrial cyanobacteria were evaluated for their antioxidant properties in terms of free-radical scavenging (DPPH and ABTS) and metal chelating activity and deoxyribose protection. Extract of Anabaena constricta was the most prominent antioxidant agent (IC 50 for DPPH activity 0.91 mg ml -1 , ABTS 0.23 mg ml -1 , deoxyribose protection 0.63 mg ml -1 and Fe ?2 -ion chelating 0.9 mg ml -1 ). The extracts of cyanobacterial species contained high quantity of total phenol and total flavonoid that were supposed to impart prominent antioxidant properties. Cyanobacterial species also showed fairly high PAL activity. We reported varied quantities of polyphenolics gallic, chlorogenic, caffeic, vanillic and ferulic acids and flavonoids rutin, quercetin and kaempferol in cyanobacterial extracts. The presence of these polyphenolics was linked with the free radical scavenging, metal chelating and antioxidative damage protecting properties of the organisms. Cyanobacteria are the most feasible, promising and alternative candidates for searching out new chemical leads for industrial applications in pharmaceuticals, neutraceuticals and biomolecules of importance. Presence of biomolecules such as polyphenolics and their connection with the prominent biological functions (e.g., antioxidant properties) make these organisms a potential source of secondary metabolites with predominant biological activities. Additionally, dominant presence of polyphenols as antioxidant agents in cyanobacterial species may reflect their adaptation strategies against abiotic stresses for their ecological success in different habitats.

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Section: Resultsmentioning

confidence: 99%

“…Total phenolic content (TPC) in the cyanobacterial strains was assessed using Folin-Ciocalteu's reagent (Machu et al 2015). Gallic acid was used as standard compound and total phenol content was expressed in terms of mg gallic acid equivalents (GAE) g -1 fresh wt.…”

Section: Estimation Of Total Phenolics and Flavonoidsmentioning

confidence: 99%

Antioxidant properties and polyphenolic content in terrestrial cyanobacteria

et al. 2017

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“…Senyawa fenolik pada alga cokelat memiliki komponen struktural yang tidak terpisahkan dari dinding sel dan memiliki berbagai fungsi perlindungan dari radiasi UV, berperan dalam reproduksi alga dan mekanisme perlindungan terhadap faktor biotik serta memiliki sifat terapeutik (Machu et al 2015). Senyawa bioaktif yang memiliki peranan sebagai antioksidan, mampu menghambat dihasilkannya agen oksidatif dalam produksi Reactive Oxygen Spesies (ROS) oleh sel darah perifer, menghambat paparan oksidatif dalam tubuh dan berperan dalam proses penurunan tekanan darah (Septian dan Widyaningsih 2014).…”

Section: Pendahuluanunclassified

“…Perbedaan total fenolik pada rumput laut disebabkan oleh beberapa faktor seperti jenis alga, geografis, musim, fisiologis dan keadaan lingkungan yang bervariasi (Machu et al 2015).…”

Section: Kadar Total Fenolikunclassified

Antioxidant Activities of Various Brown Seaweeds from Seribu Islands

2017

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Cara sitasi: Diachanty S, Nurjanah, Abdullah A. 2017. Aktivitas antioksidan berbagai jenis rumput laut coklat dari Perairan Kepulauan Seribu. Jurnal Pengolahan Hasil Perikanan Indonesia. 20(2): 305-318. AbstrakRumput laut cokelat mengandung berbagai metabolit (karotenoid, laminarin, alginat, fukoidan, manitol dan florotanin) yang berfungsi sebagai bahan anti-kanker, antioksidan dan agen kemopreventif berbagai penyakit degeneratif. Penelitian ini bertujuan untuk menentukan komposisi kimia dan aktivitas antioksidan dari rumput laut cokelat Sargassum polycystum, Padina minor dan Turbinaria conoides. Penelitian terdiri atas analisis proksimat, serat kasar, mineral, logam berat, ekstraksi, fitokimia, total fenol dan aktivitas antioksidan dengan metode DPPH, FRAP dan CUPRAC. Hasil penelitian menunjukkan S. polycystum, P. minor dan T. conoides mengandung kadar air 24-31%, lemak 0,23-0,47%, protein 3-4%, abu 27-45%, karbohidrat 26-38% dan serat kasar 2-6%. Kandungan mineral Fe S. polycystum, P. minor dan T. conoides, yaitu 0,03 g/kg hingga 0,39 g/kg, Ca 11,28 g/kg hingga 27,98 g/kg, K 13,86 g/kg hingga 41,15 g/ kg, Na 16,31 g/kg hingga 20,51 g/kg dan Mg 8,04 g/kg hingga 18,68 g/kg. Logam berat Pb S. polycystum, P. minor dan T. conoides yaitu 3,48 mg/kg hingga 12,68 mg/kg, Hg 0,24 mg/kg hingga 0,53 mg/kg dan Cu 5,66 mg/kg hingga 7,02 mg/kg. Ekstrak etanol S. polycystum, P. minor dan T. conoides memiliki senyawa alkaloid, fenolik, flavonoid, saponin steroid dan triterpenoid. Kandungan total fenol ketiga rumput laut cokelat yaitu 3758,97-8287,18 mg GAE/g. Ketiga rumput laut cokelat tersebut memiliki aktivitas antioksidan DPPH dengan nilai IC 50 1,9-9,6 mg/mL, FRAP 70,643-105,357 µmol troloks/g dan CUPRAC 85,268-201 µmol troloks/g. Kata kunci: CUPRAC, DPPH, FRAP, fenolik, rumput laut cokelat Antioxidant Activities of Various Brown Seaweeds from Seribu IslandsAbstract Brown seaweeds contain various metabolites (carotenoids, laminarin, alginate, fucoidan, mannitol, and phlorotannin) as anticancer substances, antioxidants and chemopreventive agent against degenerative diseases. This research was aimed to determine the chemical properties and antioxidants activity of Sargassum polycystum, Padina minor and Turbinaria conoides. This research consisted of the proximate analysis, crude fiber, minerals, heavy metals, extraction, phytochemicals, analysis phenolic compound and antioxidant activity with DPPH, FRAP and CUPRAC methods. The results showed moisture content of S. polycystum, P. minor, and T. conoides 24-31%, fat 0.23-0,47%, protein 3-4%, ash 27-45%, carbohydrate 26-38% and crude fiber 2-6%. Mineral Fe S. polycystum, P.minor and T.conoides about 0.03 g/kg to 0.39 g/kg, Ca 11.28 g/kg to 27.98 g/kg, K 13.86 g/kg to 41.15 g/kg, Na 16.31 g/kg to 20.51 g/kg and Mg 8.04 g/ kg to 18.68 g/kg. The range of heavy metals Pb S. polycystum, P. minor and T. conoides 3.48 mg/kg to 12.68 mg/kg, Hg 0.24 mg/kg to 0.53 mg/kg and Cu 5.66 mg/kg to 7.02 mg/kg. Ethanol extract of S. polycystum, P. minor, and T. conoides contains alkaloids, phenoli...

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“…Most of the time, the levels of free radicals in living organisms are controlled by a complex set of antioxidant defences, which minimize oxidative damage to important bio molecules, but under oxidative stress, endogenous antioxidants are not enough to deal with the increased levels of ROS 15,16 . This free radical, stable at room temperature, is reduced in the presence of an antioxidant molecule, giving rise to colourless ethanol solution.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2018

IJPSR

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Antioxidants play an important role in human health protection. Many researchers and previous studies suggest that antioxidants reduce the risk for chronic diseases like cancer, diabetes, heart disease etc. Primary sources of naturally occurring antioxidants are whole grains, fruits and vegetables. Plant sourced antioxidants like Vitamin C, Vitamin E, carotenes, phenolic acids etc, have been recognized as having the potential to reduce disease risk. Most of the antioxidant compounds in a typical diet are derived from plant sources and belong to various classes of compounds with a wide variety of physical and chemical properties. 2, 2-Diphenyl-1-picrylhydrazyl (DPPH) radicals are widely used in model systems to investigate the scavenging activity of several natural phytocompounds. DPPH assay is a rapid, simple and inexpensive method to measure antioxidant capacity of plant extracts or food. It involves the use of the free radical, DPPH which is widely used to test the ability of compounds to act as free radical scavengers or hydrogen donors and to evaluate antioxidant activity. When a solution of DPPH is mixed with that of a substance that can donate a hydrogen atom, then this gives rise to the reduced form (Dipheny-lpicrylhydrazine; non radical) with the loss of violet color. The present antioxidant work carried out on three organic solvents (methanol, chloroform and aqueous) using Acalypha indica Linn. (Euphorbeace family) plant extract with five different concentrations like 10, 20, 30, 40 and 50 µg/ml. Among these, methanolic plant extract shows highest inhibition. BHA (Butylated hydroxyanisole(µg/ml))has been used as standard reference.

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Phenolic Content and Antioxidant Capacity in Algal Food Products

Cited by 339 publications

References 41 publications

Antioxidant properties and polyphenolic content in terrestrial cyanobacteria

Antioxidant properties and polyphenolic content in terrestrial cyanobacteria

Antioxidant Activities of Various Brown Seaweeds from Seribu Islands

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