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Influence of the interactions between tea (Camellia sinensis) extracts and ascorbic acid on their antioxidant activity: analysis with interaction indexes and isobolograms.

Abstract

Products containing natural additives, including antioxidants, are usually perceived by consumers as safer than those with synthetic ones. Natural antioxidants, besides having a preservative activity, may exert beneficial health effects. Interactions between antioxidants may significantly change their antioxidant activity, thus in designing functional foods or food/cosmetic ingredients knowledge about the type of interactions could be useful. In the present study, the interactions between ascorbic acid (AA; vitamin C) and different black and green tea extracts and the influence on their antioxidant activities were investigated. The antioxidant activities of tea extracts and their mixtures with AA prepared in several different weight ratios were measured using the trolox equivalent antioxidant capacity (TEAC), 1,1-diphenyl-2-picrylhydrazyl (DPPH), and ferric-reducing antioxidant power (FRAP) methods. The type of interaction was determined by interaction indexes and isobolograms. It was found that the weight ratio of extracts to AA significantly influenced the antioxidant activity of a mixture and the type of interaction between these components. The weight ratio of tea extract to AA can cause the change of interaction, e.g. from antagonism to additivism or from additivism to synergism. The observed differences in the type of interactions were probably also a result of different extracts' polyphenol composition and content. The type of interaction may also be affected by the medium in which extracts and AA interact, especially its pH and the solvent used. To obtain the best antioxidant effect, all these factors should be taken into account during the design of a tea extract-AA mixture.

Authors+Show Affiliations

a Faculty of Commodity Science , Poznań University of Economics , Poznan , Poland.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26035225

Citation

Enko, Jolanta, and Anna Gliszczyńska-Świgło. "Influence of the Interactions Between Tea (Camellia Sinensis) Extracts and Ascorbic Acid On Their Antioxidant Activity: Analysis With Interaction Indexes and Isobolograms." Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment, vol. 32, no. 8, 2015, pp. 1234-42.
Enko J, Gliszczyńska-Świgło A. Influence of the interactions between tea (Camellia sinensis) extracts and ascorbic acid on their antioxidant activity: analysis with interaction indexes and isobolograms. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2015;32(8):1234-42.
Enko, J., & Gliszczyńska-Świgło, A. (2015). Influence of the interactions between tea (Camellia sinensis) extracts and ascorbic acid on their antioxidant activity: analysis with interaction indexes and isobolograms. Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment, 32(8), 1234-42. https://doi.org/10.1080/19440049.2015.1049218
Enko J, Gliszczyńska-Świgło A. Influence of the Interactions Between Tea (Camellia Sinensis) Extracts and Ascorbic Acid On Their Antioxidant Activity: Analysis With Interaction Indexes and Isobolograms. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2015;32(8):1234-42. PubMed PMID: 26035225.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of the interactions between tea (Camellia sinensis) extracts and ascorbic acid on their antioxidant activity: analysis with interaction indexes and isobolograms. AU - Enko,Jolanta, AU - Gliszczyńska-Świgło,Anna, Y1 - 2015/06/08/ PY - 2015/6/3/entrez PY - 2015/6/3/pubmed PY - 2016/4/29/medline KW - antioxidant KW - ascorbic acid KW - interaction KW - polyphenols KW - tea SP - 1234 EP - 42 JF - Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment JO - Food Addit Contam Part A Chem Anal Control Expo Risk Assess VL - 32 IS - 8 N2 - Products containing natural additives, including antioxidants, are usually perceived by consumers as safer than those with synthetic ones. Natural antioxidants, besides having a preservative activity, may exert beneficial health effects. Interactions between antioxidants may significantly change their antioxidant activity, thus in designing functional foods or food/cosmetic ingredients knowledge about the type of interactions could be useful. In the present study, the interactions between ascorbic acid (AA; vitamin C) and different black and green tea extracts and the influence on their antioxidant activities were investigated. The antioxidant activities of tea extracts and their mixtures with AA prepared in several different weight ratios were measured using the trolox equivalent antioxidant capacity (TEAC), 1,1-diphenyl-2-picrylhydrazyl (DPPH), and ferric-reducing antioxidant power (FRAP) methods. The type of interaction was determined by interaction indexes and isobolograms. It was found that the weight ratio of extracts to AA significantly influenced the antioxidant activity of a mixture and the type of interaction between these components. The weight ratio of tea extract to AA can cause the change of interaction, e.g. from antagonism to additivism or from additivism to synergism. The observed differences in the type of interactions were probably also a result of different extracts' polyphenol composition and content. The type of interaction may also be affected by the medium in which extracts and AA interact, especially its pH and the solvent used. To obtain the best antioxidant effect, all these factors should be taken into account during the design of a tea extract-AA mixture. SN - 1944-0057 UR - https://www.unboundmedicine.com/medline/citation/26035225/Influence_of_the_interactions_between_tea__Camellia_sinensis__extracts_and_ascorbic_acid_on_their_antioxidant_activity:_analysis_with_interaction_indexes_and_isobolograms_ L2 - https://www.tandfonline.com/doi/full/10.1080/19440049.2015.1049218 DB - PRIME DP - Unbound Medicine ER -