Details

Autor(en) / Beteiligte

• Robert, Paz
• Vergara, Cristina
• Silva-Weiss, Andrea
• Osorio, Fernando A
• Santander, Rocío
• Sáenz, Carmen
• Giménez, Begoña
• Annamalai, Pratheep K.

Titel

Influence of gelation on the retention of purple cactus pear extract in microencapsulated double emulsions

Ist Teil von

• PloS one, 2020-01, Vol.15 (1), p.e0227866-e0227866

Ort / Verlag

United States: Public Library of Science

Erscheinungsjahr

2020

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• A purple cactus pear (Opuntia ficus-indica) extract (CP) was encapsulated in double emulsions (DE) gelled with gelatin (DE-CP-G) and with gelatin and transglutaminase (DE-CP-GT), as well as in a DE with a liquid external aqueous phase (DE-CP), in order to study the retention of betanin as colorant agent. Both gelled DEs showed a predominantly elastic behavior, in contrast with DE-CP. The degradation rate constant of betanin was significantly higher in DE-CP-GT (90.2 x 10-3 days-1) than in DE-CP-G (11.0 x 10-3 days-1) and DE-CP (14.6 x 10-3 days-1) during cold-storage (4 °C). A shift towards yellow color was found in all the systems during cold-storage (4 °C) and after thermal treatment (70°C/30 min), especially in DE-CP-GT, denoting a higher degradation of betanin. Betalamic acid, cyclo-Dopa 5-O-β-glucoside, 17-decarboxy-betanin and neobetanin were identified by UHPLC-MS/MS as degradation products of betanin.