Luo, Kathleen K. published the artcileInfluence of post-harvest moisture on roasted almond shelf life and consumer acceptance, Safety of 2,3,5-Trimethylpyrazine, the main research area is Prunus roasted mech drying storage quality moisture shelf life; HS-SPME GC/MS; almond; descriptive analysis; moisture; sensory; shelf-life.
BACKGROUND : The harvest weights of sweet almonds (Prunus dulcis) have significantly increased to meet consumer demand and now exceed processing facility capabilities. Crops are stockpiled for longer periods, increasing the probability of moisture exposure. Wet almonds can be mech. dried prior to processing; however, it is unclear how this practice influences lipid oxidation, shelf-life, and consumer acceptance. To address this, almonds were exposed to 8% moisture and dried with low heat (ME). Almonds were roasted and stored under accelerated conditions for 12 mo and markers of lipid oxidation, headspace volatiles, sensory attributes, and consumer liking were evaluated. RESULTS : At 7 mo of storage, light roast ME almonds had higher levels of volatiles related to lipid oxidation than non-moisture exposed almonds (NME) and were significantly higher in oxidized, cardboard and painty / solvent flavors. Although untrained consumers did not show significant preferences between the light roast ME and NME almonds, there were quality losses related to lipid oxidation that trained panelists could detect. Dark roast ME almonds demonstrated significant lipid oxidation by 5 mo of storage, indicating they will have a compromised shelf life. Findings also indicate that octanal, nonanal, 2-octenal, and hexanoic acid are good indicators of consumer acceptability. CONCLUSION : The results of this research illustrate that post-harvest moisture exposure with mech. drying has a significant effect on the storage quality of roasted almonds and is most pronounced in dark roast products.
Journal of the Science of Food and Agriculture published new progress about Almond (roasted). 14667-55-1 belongs to class pyrazines, name is 2,3,5-Trimethylpyrazine, and the molecular formula is C7H10N2, Safety of 2,3,5-Trimethylpyrazine.