title: Impact of flavour solvent (propylene glycol or triacetin) on vanillin, 5-(hydroxymethyl)furfural, 2,4-decadienal, 2,4-heptadienal, structural parameters and sensory perception of shortcake biscuits over accelerated shelf life testing.
abstract: The influence of choice of flavour solvent, propylene glycol (PG) or triacetin (TA), was investigated during accelerated shelf life (ASL) testing of shortcake biscuits. Specifically, the differential effect on the stability of added vanillin, the natural baked marker compound 5-(hydroxymethyl)furfural (HMF), specific markers of oxidative rancidity (2,4-decadienal, 2,4-heptadienal), and the structural parameters of hardness and fracturability. Significantly more HMF was formed during baking of biscuits prepared with TA; these biscuits were also more stable to oxidative degradation and loss of vanillin during ageing than biscuits prepared with PG. Fresh TA biscuits were significantly more brittle than fresh PG biscuits. There was no impact of solvent choice on hardness. Sensory evaluation of hardness, vanilla flavour and oily off-note was tested during ASL testing. There was no significant impact of storage on sensory ratings for either the PG or TA biscuits.
authors.affiliation: Division of Food Sciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD, UK.
authors.forename: Ni
authors.initials: N
authors.lastname: Yang
authors.forename: Joanne
authors.initials: J
authors.lastname: Hort
authors.forename: Robert
authors.initials: R
authors.lastname: Linforth
authors.forename: Keith
authors.initials: K
authors.lastname: Brown
authors.forename: Stuart
authors.initials: S
authors.lastname: Walsh
authors.forename: Ian D
authors.initials: ID
authors.lastname: Fisk
mesh_terms: D000328:Adult; D001547:Benzaldehydes / Q000737:chemistry*; D003296:Cooking; D005260:Female; D005421:Flavoring Agents / Q000737:chemistry*; D005504:Food Analysis; D061353:Food Storage; D005662:Furaldehyde / Q000031:analogs & derivatives* / Q000737:chemistry; D006801:Humans; D008297:Male; D010084:Oxidation-Reduction; D019946:Propylene Glycol / Q000737:chemistry*; D055697:Taste Perception; D014215:Triacetin / Q000737:chemistry*; D055815:Young Adult
chemical_list: D001547:Benzaldehydes; D005421:Flavoring Agents; D019946:Propylene Glycol; C008046:5-hydroxymethylfurfural; C100058:vanillin; D005662:Furaldehyde; D014215:Triacetin