Skip to Content
MilliporeSigma
  • Water and temperature contribution to the structuration of starch matrices in the presence of flavour.

Water and temperature contribution to the structuration of starch matrices in the presence of flavour.

Food chemistry (2015-11-18)
Silawan Somboonchan, Samuel Lubbers, Gaëlle Roudaut
ABSTRACT

The effect of modulating the gelatinisation extent by hydration (50/50 and 80/20 water to starch ratio) and temperature (65 or 85 °C) on various properties of wheat starch in presence of flavours has been studied. The hydrothermal treatments resulted in samples with different properties. The lowest residual flavour content was found in samples treated at the highest hydration and temperature (85 °C) while the other treatment conditions led to samples with similar residual flavour content. Ethyl hexanoate significantly increased the characteristic pasting viscosities compared to starch±2-hexanone; suggesting a greater structuration with ethyl hexanoate. Heating starch in excess water caused amylopectin melting, but promoted an incomplete granular swelling as revealed by RVA. This study suggested that lowering the hydration upon treatment could limit both crystal melting (with a residual crystalline content up to 38% in the most extreme conditions) and granular swelling but increased granule organisation like following annealing.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Ethyl hexanoate, SAJ special grade, ≥99.0%
Supelco
2-Hexanone, analytical standard
Sigma-Aldrich
Ethyl octanoate, natural, ≥98%, FCC, FG
Sigma-Aldrich
Ethyl octanoate, ≥98%, FCC, FG
Sigma-Aldrich
Ethyl hexanoate, ≥98%, FCC, FG
Sigma-Aldrich
Ethyl octanoate, ReagentPlus®, ≥99%
Sigma-Aldrich
Ethyl hexanoate, natural, ≥98%, FCC, FG
Sigma-Aldrich
N,N′-Disuccinimidyl carbonate, ≥95%
Sigma-Aldrich
Ethyl hexanoate, ≥99%
Sigma-Aldrich
2-Hexanone, reagent grade, 98%
Supelco
Dichloromethane solution, contains 10 % (v/v) methanol
Sigma-Aldrich
Dichloromethane, suitable for HPLC, ≥99.9%, contains 40-150 ppm amylene as stabilizer
Supelco
Dichloromethane, ≥99.9%
Sigma-Aldrich
Dichloromethane, anhydrous, ≥99.8%, contains 40-150 ppm amylene as stabilizer
Sigma-Aldrich
Dichloromethane, SAJ first grade, ≥99.0%
Sigma-Aldrich
Dichloromethane, JIS special grade, ≥99.0%
Sigma-Aldrich
Dichloromethane, puriss. p.a., ACS reagent, reag. ISO, ≥99.9% (GC)
Sigma-Aldrich
Dichloromethane, ACS reagent, ≥99.5%, contains 40-150 ppm amylene as stabilizer
Sigma-Aldrich
Dichloromethane, contains 40-150 ppm amylene as stabilizer, ACS reagent, ≥99.5%
Sigma-Aldrich
Dichloromethane, puriss., meets analytical specification of Ph. Eur., NF, ≥99% (GC)
Sigma-Aldrich
Dichloromethane, biotech. grade, 99.9%, contains 40-150 ppm amylene as stabilizer
Sigma-Aldrich
Dichloromethane, ACS reagent, ≥99.5%, contains 40-150 ppm amylene as stabilizer