Characterization of the key aroma compounds in three types of bagels by means of the sensomics approach

Background To evaluate the impact of cold fermentation time on bagel rolls, the key aroma-active compounds in the volatile fractions obtained from three different bagel rolls through solvent assisted flavor evaporation (SAFE) were sequentially characterized by an aroma extract dilution analysis (AEDA), quantified by stable isotope dilution and analyzed by odor activity values (OAVs) respectively. Results Findings revealed 40 aroma-active compounds with flavor dilution (FD) factor ranges of 2–1024. Of these, 22 compounds (FD ≥ 16) were quantified by stable isotope dilution assays (SIDA). Subsequent analysis of the 22 compounds by odor activity values (OAVs) revealed 14 compounds with OAVs ≥ 1 and the highest concentrations were obtained for 2,3-butanedione, 2-phenylethanol, 3-methylbutanal and acetoin respectively. Two recombination models of the bagels (i.e. 24 h and 48 h bagels) showed similarity to the corresponding bagels. Omission tests confirmed that 2,3-butanedione (buttery), acetoin (buttery), 2-acetyl-1-pyrroline (roasty), 5-methyl-2-furanmethanol (bread-like), (Z)-4-heptenal (biscuit-like) and 4-hydroxy-2,5-dimethyl-3(2H)-furanone, were the key aroma compounds. Additionally, acetic acid, butanoic acid, 2-phenylethanol (honey-like), 3-methylbutanoic acid, 2/3-methylbutanal, vanillin, 3-methylbutanol, methional were also important odorants of the bagel. Conclusion Whilst the long, cold fermented bagels exhibited roasty, malty, buttery, baked potato-like, smoky and biscuit-like notes, the control bagels produced similar but less intense odor notes.

Characterization of the Key Aroma Compounds in Three Types of Bagels by Means of the Sensomics Approach

Background:To evaluate the impact of cold fermentation time on bagel rolls, the key aroma-active compounds in the volatile fractions obtained from three different bagel rolls through solvent assisted flavor evaporation (SAFE) were sequentially characterized by an aroma extract dilution analysis (AEDA), quantified by stable isotope dilution and analyzed by odor activity values (OAVs) respectively.. Results: Findings revealed Forty aroma-active compounds with flavor dilution (FD) factor ranges of 2 – 1024. Of these, 22 compounds (FD≥ 16) were quantified by stable isotope dilution assays (SIDA). Subsequent analysis of the 22 compounds by odor activity values (OAVs) revealed 14 compounds with OAVs ≥ 1 and the highest concentrations were obtained for 2,3-butanedione, 2-phenylethanol, 3-methylbutanal and acetoin respectively. Two recombination models of the bagels (i.e. 24 h and 48 h bagels) showed similarity to the corresponding bagels. Omission tests confirmed that 2,3-butanedione (buttery), acetoin (buttery), 2-acetyl-1-pyrroline (roasty), 5-methyl-2-furanmethanol (bread-like), (Z)-4-heptenal (biscuit-like) and 4-hydroxy-2,5-dimethyl-3(2H)-furanone, were the key aroma compounds. Additionally, acetic acid, butanoic acid, 2-phenylethanol (honey-like), 3-methylbutanoic acid, 2/3-methylbutanal, vanillin, 3-methylbutanol, methional were also important odorants of the bagel. Conclusion: Whilst the long, cold fermented bagels exhibited roasty, malty, buttery, baked potato-like, smoky and biscuit-like notes, the control bagels produced similar but less intense odor notes.

Characterization of the Key Aroma Constituents in Fry Breads by Means of the Sensomics Concept

The key aroma constituents in the volatile fractions isolated FROM two differently processed fry breads by solvent-assisted flavor evaporation were characterized by an aroma extract dilution analysis (AEDA). Twenty-two compounds were identified with flavor dilution (FD) factor ranges of 2–516. Among them, 13 compounds (FD ≥ 16) were quantified by stable isotope dilution assays and analyzed by odor activity values (OAVs). Of these, 11 compounds had OAVs ≥ 1, and the highest concentrations were determined for δ-decalactone and 2,3-butanedione. Two recombination models of the fry breads showed similarity to the corresponding fry breads. Omission tests confirmed that aroma-active constituents, such as δ-decalactone (oily/peach), 2-acetyl-1-pyrroline (roasty/popcorn-like), 3-methylbutanal (malty), methional (baked potato-like), 2,3-butanedione (buttery), phenyl acetaldehyde (flowery), (E,E)-2,4-decadienal (deep-fried), butanoic acid, and 3-methylbutanoic acid, were the key aroma constituents of fry bread. In addition, 3-methoxy-4-vinylphenol (smoky) and 4-hydroxy-2,5-dimethyl-3(2H)-furanone were also identified as important aroma constituents of fry bread.

Cutting Calories: The Preference for Lower Caloric Density Versus Smaller Quantities Among Restrained and Unrestrained Eaters

The marketplace includes many attractive high-calorie indulgent food offerings. Despite their appeal, consumers may often be prompted to consider lower-calorie-package offerings instead (e.g., 100-calorie packs). The question thus arises: What predicts consumers’ preferences between different kinds of lower-calorie offerings? The authors conceptualize two different routes to lower-calorie versions of indulgent foods: a lower-caloric-density version (e.g., baked potato chips) or a smaller-portion-size version (e.g., a smaller bag of potato chips). The authors examine how such versions are differentially preferred and why, focusing on the key role of dietary restraint. The authors show that as dietary restraint increases, the preference for a lower-calorie version created via lower caloric density (vs. a smaller portion size) increases. Differential weights placed on health and fullness goals help explain differing preferences across dietary restraint (as the lower-caloric-density version is perceived as healthier and more filling, albeit less tasty, than the smaller-portion-size version). This framework offers theoretical implications for understanding two routes to cutting calories, practical implications for food marketers, and methodological implications for studying food choices.

Potato Snacks in Bangladesh: Unhealthy Snack with Higher Fat Content and Alternative Healthier Options

Potato snack is one of the most popular snacks item in Bangladesh. In this study the nutrition facts of potato snacks (potato chips and french fries) of different brands of home and aboard and of different food chain shops were analyzed and compared with the ideal one. From this study it was observed that most of the brands have been deviated from the quantity of nutrition facts that should be contained in an ideal potato snack. The noteworthy difference was noticed for the case of protein content for potato chips. For French fries, it has been determined that homemade french fries contain the lowest fat and carbohydrate. Since potato snacks are a source of harmful trans-fat, saturated fat and also high in calories, this paper has been discussed some healthier alternatives to this salty snack such as baked potato snack, using sugar solution and sweet potato. DOI: http://dx.doi.org/10.3329/jce.v28i1.18102 Journal of Chemical Engineering, Vol. 28, No. 1, December 2013: 4-8