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Effect of high hydrostatic pressure on the polyphenols and antioxidant activity of plantain pulp ( Musa paradisiaca AAB )
Author(s) -
JiménezMartínez Miriam C,
MontalvoGonzález Efigenia,
SáyagoAyerdi Sonia G,
MercadoMercado Gilberto,
Ramírezde León José A,
PazGamboa Ernestina,
VivarVera Maria A
Publication year - 2017
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8067
Subject(s) - gallic acid , chemistry , ellagic acid , food science , abts , musa × paradisiaca , polyphenol , pulp (tooth) , catechin , flavonoid , hydrostatic pressure , antioxidant , quercetin , dpph , biochemistry , medicine , physics , pathology , thermodynamics
BACKGROUND The impact of high‐pressure processing ( HPP ) on the polyphenol ( PP ) content and antioxidant activity ( AOX ) of plantain pulp was evaluated. Pressures of 400, 500 and 600 MPa were applied to plantain pulp for 90 and 180 s at room temperature (25 °C). Polyphenoloxidase activity, extractable ( EPP ) and non‐extractable PP ( NEPP ) contents, flavonoid content and AOX ( FRAP , ABTS •+ ) were evaluated. In addition, PP identification was performed using high‐performance liquid chromatography. RESULTS Polyphenoloxidase activity was inhibited after HPP under all of the conditions studied. Increases of 110.80% and 137.40% in EPP content under conditions of 500 MPa /180 s and 600 MPa /90 s were observed with a simultaneous improvement in the AOX with increments of up to 128.71%. The treatment under conditions of 500 MPa /90 s had the highest total PP content, including the highest content of flavonoids (0.22 g ellagic acid equivalents kg −1 dry weight) and the proportion of NEPP that contained hydrolysable PPs (91.12 g gallic acid equivalents kg −1 dry weight with high AOX . The identified PPs included catechin, quercetin, gallic and hydroxybenzoic acids. CONCLUSION HPP performed at a room temperature can be used for improving the total content of PP compounds in plantain pulp under specific pressure and time conditions. © 2016 Society of Chemical Industry