The goal of this preliminary study was to examine the effect of participants’ sexes on the temporal sequence of dominant sensations elicited by fruit-flavored teas. Twelve healthy young adults were assigned to male (...The goal of this preliminary study was to examine the effect of participants’ sexes on the temporal sequence of dominant sensations elicited by fruit-flavored teas. Twelve healthy young adults were assigned to male (n = 6) and female (n = 6) groups. Both groups were evaluated for four sensations using four fruit-flavored teas with 0.05 M sucrose using the temporal dominance of sensations (TDS) method. Only two sensations, sweetness and fruitiness, were consistently reported in the two groups. The male group first reported fruitiness and then sweetness as the dominant sensation following ingestion of the samples. Conversely, the female group reported these two dominant sensations in the reverse order. Significant dominant durations between the two sensations largely varied among the samples in both groups. These results suggest that there are sex-based differences in the temporal sequence of dominant sensations elicited by fruit-flavored teas as evaluated by the TDS method.展开更多
The goals of this study were to examine, using the temporal dominance of sensations (TDS) method, the effects of 1) the sucrose concentration on the temporal sequence of sweetness perception in four fruit-flavored (le...The goals of this study were to examine, using the temporal dominance of sensations (TDS) method, the effects of 1) the sucrose concentration on the temporal sequence of sweetness perception in four fruit-flavored (lemon, peach, strawberry, and vanilla) teas with 0.05, 0.15, and 0.25 M sucrose;and 2) participants’ sex on this temporal sequence. Twenty-four healthy young adults were assigned to female (n = 12) and male (n = 12) groups. Both groups evaluated five sensory attributes in 12 samples (four fruit-flavored teas, each with three sucrose concentrations). As in our preceding study [1], two sensations, sweetness and fruitiness, were dominant after ingesting the 12 teas in both groups, but the temporal sequence of sweetness perception differed between the two groups. On average, the male group reported the first appearance of sweetness earlier in the samples with 0.05 M sucrose compared with the female group, with the samples containing 0.15 and 0.25 M sucrose. The average durations of the sweetness sensation were different between the male and female groups as well as among the sucrose concentrations and the four flavors tested.展开更多
采用一种新的感官评价方法——暂时性感官支配分析法(Temporal dominance of sensation,TDS)对4℃条件下保藏0、30、60、90d以及120d的辣白菜的感官属性进行评价,同时检测辣白菜中的总酸(以乳酸计)、总糖、NaCl、水分含量以及菌落总数...采用一种新的感官评价方法——暂时性感官支配分析法(Temporal dominance of sensation,TDS)对4℃条件下保藏0、30、60、90d以及120d的辣白菜的感官属性进行评价,同时检测辣白菜中的总酸(以乳酸计)、总糖、NaCl、水分含量以及菌落总数的变化规律。其理化指标检测结果表明:随着保藏时间的延长,辣白菜的总酸含量逐渐上升,总糖含量与水分含量略有下降,NaCl含量略有上升。菌落总数检测结果表明:在保藏过程中,菌落总数逐渐上升,且其增长速率呈降低趋势。TDS法感官评价结果表明:保藏时间为0d的辣白菜其酸味较为淡薄,辣味、甜味、咸味较为突出,质地清脆,总体风味偏差;保藏时间为30、60d的辣白菜其酸味、辣味、甜味、咸味比例协调,质地清脆,总体风味较好;保藏时间为90、120d的辣白菜其酸味、辣味比较突出,甜味、咸味较为淡薄,质地偏软,总体风味较差。综上所述,辣白菜在4℃条件下较为适宜的保藏期限为60d,其中保藏30d时辣白菜中总酸含量为0.083g/kg,总糖含量为1.12%,水分含量为84.21g/100g,NaCl含量为2.280%,菌落总数为2.60lg(CFU/g),此时其口感风味最佳。展开更多
暂时性感官支配法(temporal dominance of sensations,TDS)是一种时间多维动态感官分析方法。该方法向评估者提供一份描述产品属性的列表,评价员在品尝的每个时刻选择他们认为占支配地位的感知,以此获得动态、多属性的感官评价结果。本...暂时性感官支配法(temporal dominance of sensations,TDS)是一种时间多维动态感官分析方法。该方法向评估者提供一份描述产品属性的列表,评价员在品尝的每个时刻选择他们认为占支配地位的感知,以此获得动态、多属性的感官评价结果。本文对TDS的概念、评价流程和其在食品感官评价中的应用进展进行综述,并对TDS的改进方向进行总结,以期从理解人们在消费食物过程中感官感知动态变化角度为产品研发提供新思路。展开更多
利用暂时性感官支配分析(temporal dominance of sensation,TDS)法结合时间-强度(time-intensity,TI)法评价降酸前后的山葡萄酒酸味强度变化及酸感变化。结果表明:利用TI法评价,降酸后山葡萄酒酸味强度较低,且在TI法评价的60 s过程中,...利用暂时性感官支配分析(temporal dominance of sensation,TDS)法结合时间-强度(time-intensity,TI)法评价降酸前后的山葡萄酒酸味强度变化及酸感变化。结果表明:利用TI法评价,降酸后山葡萄酒酸味强度较低,且在TI法评价的60 s过程中,降酸前后山葡萄酒酸味强度均呈降低趋势。利用TDS法评价,随品尝时间的增加,降酸前山葡萄酒中优势酸感均为刺激性,其优势率呈降低趋势,其他酸感被遮蔽,口感缺乏协调性;降酸后山葡萄酒酸感中柔和性优势率先增加后降低,清爽性优势率先增加后降低,然后基本保持不变,刺激性优势率逐渐降低,粗糙性优势率先降低后上升再降低,寡淡性优势率逐渐增加。降酸后山葡萄酒更加协调、适口。因此,TDS结合TI法能够有效对降酸前后山葡萄酒酸味强度及不同酸感属性随时间的变化进行评价,对山葡萄酒降酸具有理论指导意义。展开更多
文摘The goal of this preliminary study was to examine the effect of participants’ sexes on the temporal sequence of dominant sensations elicited by fruit-flavored teas. Twelve healthy young adults were assigned to male (n = 6) and female (n = 6) groups. Both groups were evaluated for four sensations using four fruit-flavored teas with 0.05 M sucrose using the temporal dominance of sensations (TDS) method. Only two sensations, sweetness and fruitiness, were consistently reported in the two groups. The male group first reported fruitiness and then sweetness as the dominant sensation following ingestion of the samples. Conversely, the female group reported these two dominant sensations in the reverse order. Significant dominant durations between the two sensations largely varied among the samples in both groups. These results suggest that there are sex-based differences in the temporal sequence of dominant sensations elicited by fruit-flavored teas as evaluated by the TDS method.
文摘The goals of this study were to examine, using the temporal dominance of sensations (TDS) method, the effects of 1) the sucrose concentration on the temporal sequence of sweetness perception in four fruit-flavored (lemon, peach, strawberry, and vanilla) teas with 0.05, 0.15, and 0.25 M sucrose;and 2) participants’ sex on this temporal sequence. Twenty-four healthy young adults were assigned to female (n = 12) and male (n = 12) groups. Both groups evaluated five sensory attributes in 12 samples (four fruit-flavored teas, each with three sucrose concentrations). As in our preceding study [1], two sensations, sweetness and fruitiness, were dominant after ingesting the 12 teas in both groups, but the temporal sequence of sweetness perception differed between the two groups. On average, the male group reported the first appearance of sweetness earlier in the samples with 0.05 M sucrose compared with the female group, with the samples containing 0.15 and 0.25 M sucrose. The average durations of the sweetness sensation were different between the male and female groups as well as among the sucrose concentrations and the four flavors tested.
文摘采用一种新的感官评价方法——暂时性感官支配分析法(Temporal dominance of sensation,TDS)对4℃条件下保藏0、30、60、90d以及120d的辣白菜的感官属性进行评价,同时检测辣白菜中的总酸(以乳酸计)、总糖、NaCl、水分含量以及菌落总数的变化规律。其理化指标检测结果表明:随着保藏时间的延长,辣白菜的总酸含量逐渐上升,总糖含量与水分含量略有下降,NaCl含量略有上升。菌落总数检测结果表明:在保藏过程中,菌落总数逐渐上升,且其增长速率呈降低趋势。TDS法感官评价结果表明:保藏时间为0d的辣白菜其酸味较为淡薄,辣味、甜味、咸味较为突出,质地清脆,总体风味偏差;保藏时间为30、60d的辣白菜其酸味、辣味、甜味、咸味比例协调,质地清脆,总体风味较好;保藏时间为90、120d的辣白菜其酸味、辣味比较突出,甜味、咸味较为淡薄,质地偏软,总体风味较差。综上所述,辣白菜在4℃条件下较为适宜的保藏期限为60d,其中保藏30d时辣白菜中总酸含量为0.083g/kg,总糖含量为1.12%,水分含量为84.21g/100g,NaCl含量为2.280%,菌落总数为2.60lg(CFU/g),此时其口感风味最佳。
文摘暂时性感官支配法(temporal dominance of sensations,TDS)是一种时间多维动态感官分析方法。该方法向评估者提供一份描述产品属性的列表,评价员在品尝的每个时刻选择他们认为占支配地位的感知,以此获得动态、多属性的感官评价结果。本文对TDS的概念、评价流程和其在食品感官评价中的应用进展进行综述,并对TDS的改进方向进行总结,以期从理解人们在消费食物过程中感官感知动态变化角度为产品研发提供新思路。
文摘利用暂时性感官支配分析(temporal dominance of sensation,TDS)法结合时间-强度(time-intensity,TI)法评价降酸前后的山葡萄酒酸味强度变化及酸感变化。结果表明:利用TI法评价,降酸后山葡萄酒酸味强度较低,且在TI法评价的60 s过程中,降酸前后山葡萄酒酸味强度均呈降低趋势。利用TDS法评价,随品尝时间的增加,降酸前山葡萄酒中优势酸感均为刺激性,其优势率呈降低趋势,其他酸感被遮蔽,口感缺乏协调性;降酸后山葡萄酒酸感中柔和性优势率先增加后降低,清爽性优势率先增加后降低,然后基本保持不变,刺激性优势率逐渐降低,粗糙性优势率先降低后上升再降低,寡淡性优势率逐渐增加。降酸后山葡萄酒更加协调、适口。因此,TDS结合TI法能够有效对降酸前后山葡萄酒酸味强度及不同酸感属性随时间的变化进行评价,对山葡萄酒降酸具有理论指导意义。
