• Home
  • Search Results
  • Off-flavour masking of secondary lipid oxidation products by pea dextrin.

Off-flavour masking of secondary lipid oxidation products by pea dextrin.

Food chemistry (2014-09-23)
S Böttcher, U Steinhäuser, S Drusch
ABSTRACT

The aim of the present study was to evaluate the off-flavour masking potential of pea dextrin (PD) in emulsions rich in ω-3 and ω-6-fatty acids in comparison with maltodextrin (MD) and 2-hydroxypropyl-β-cyclodextrin (HPBCD). After optimisation of the homogenisation procedure, stable emulsions were prepared and stored for up to eight weeks. The development of six secondary lipid oxidation products: propanal, 1-penten-3-one, 1-penten-3-ol, hexanal, (E,E)-2,4-heptadienal and (E,Z)-2,6-nonadienal, was monitored via headspace gas chromatography after solid-phase microextraction. Sensory evaluation of the emulsions was performed by a trained panel. PD already showed masking properties for propanal, 1-penten-3-one, hexanal and (E,E)-2,4-heptadienal during validation of the gas chromatographic analysis, but not for 1-penten-3-ol or (E,Z)-2,6-nonadienal. During storage, the course of lipid oxidation was similar in all emulsions as concluded from the hydroperoxide value. Results from the sensory evaluation confirmed a masking of rancid off-flavour. In conclusion, pea dextrin is suitable for masking off-flavour resulting from early stages of lipid oxidation.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Divinylbenzene, technical grade, 80%
Sigma-Aldrich
Hexanal, 98%
Sigma-Aldrich
Propionaldehyde, reagent grade, 97%
Sigma-Aldrich
2-Heptanone, 99%
Supelco
Hexanal, analytical standard
Sigma-Aldrich
Propionaldehyde, ≥97%, FG
Sigma-Aldrich
Divinylbenzene, technical grade, 55%
Supelco
Propionaldehyde, analytical standard
Sigma-Aldrich
Hexanal, ≥97%, FCC, FG
Sigma-Aldrich
1-Penten-3-one, contains 0.1% BHT as stabilizer, 97%
Sigma-Aldrich
2-Heptanone, ≥98%, FCC, FG
Sigma-Aldrich
Poly(dimethylsiloxane), viscosity 1.0 cSt (25 °C)
Sigma-Aldrich
trans-2,cis-6-Nonadienal, mixture of isomers, ≥96%, stabilized, FCC, FG
Sigma-Aldrich
Hexanal, natural, ≥95%, FG
Sigma-Aldrich
2,4-Heptadienal, technical grade, 90%
Sigma-Aldrich
1-Penten-3-ol, ≥98%, FG
Sigma-Aldrich
Hexamethyldisiloxane, viscosity 0.65 cSt (25 °C)
Sigma-Aldrich
1-Penten-3-ol, 99%
Sigma-Aldrich
trans-2,cis-6-Nonadienal, 95%
Sigma-Aldrich
2-Heptanone, natural, 98%, FG
Supelco
2-Heptanone, analytical standard
Supelco
1-Penten-3-ol, analytical standard
Supelco
1-Penten-3-one, contains ~0.1% BHT as stabilizer, analytical standard
Supelco
trans-2,cis-6-Nonadienal, analytical standard