感官评价分析课件

1、,ABC,-Sensory Analysis 感官分析,-Factors Influencing Sensory Measurement 影响感官测定的因素,-Procedures For Smelling the brain then organizes and integrates the incoming sensation into perceptions with the contribution of past experience; lastly a response is formulated based on the subjects perceptions 感官受到刺激，将

2、其转化为神经信号传输到大脑；大脑根据以往的经验将感觉组织整合为知觉.；最终，基于主体的知觉而形成反应,Factors Influencing Sensory Measurement 影响感官测定的因素,Expectation error 期望错误 Stimulus error 刺激错误 Leniency error 宽大错误 Proximity error 近似错误 Central tendency error 中心化错误,Factors Influencing Sensory Measurement 影响感官测定的因素,Suggestion effect 暗示效应 Positional bi

3、as (order effect) 位置偏见(顺序效应) Contrast effect and 对照效应和集中错误convergence error Motivation 动力,Expectation error 期望的错误 Information given with the sample may trigger preconceived ideas 样品附带的信息可能导致先入为主 Stimulus error 刺激的错误 Irrelevant criteria , such as color or size influence the observer 无关的标准如颜色或大小会影响观察者

4、,Factors Influencing Sensory Measurement 影响感官测定的因素,Leniency error 宽大的错误 Based on their feelings about the researcher, ignoring product differences 根据对研究者的感觉，而忽略了产品的差异,Factors Influencing Sensory Measurement 影响感官测定的因素,Suggestion effect 暗示效应 Reactions of other members of a panel can influence the resp

5、onse of a panelist 品尝小组中其他成员的反应会影响测试者,Positional bias (order effect) 位置偏见(顺序效应) Score the second product ( of a set of products) higher or lower than expected 给一组产品中第二个产品打分偏高或偏低 Contrast effect and convergence error 对照效应和集中错误 Exaggerate the difference or mask small differences between the other samp

6、les in their scores 夸大或掩盖样品间的差异,Factors Influencing Sensory Measurement 影响感官测定的因素,Proximity error 近似的错误 Correlation between characteristics close together maybe higher than other characteristic 相似特征间的关联比其他特征间的关联可能要高一些 Central tendency error 中心化的错误 Scoring products in the midrange of a scale to avoid

7、 extremes 给产品打分偏中等，以避免极端,Factors Influencing Sensory Measurement 影响感官测定的因素,Motivation 动力 Affects sensory perception. For e.g. interested panelist is always more efficient and reliable. 动力会影响感官知觉。比如感兴趣的品尝小组成员总会更有效、更可靠。,Factors Influencing Sensory Measurement 影响感官测定的因素,Controls For Sensory Testing 对感官

8、测试的控制,Environment Controls 环境的控制 Panelist Controls 品评小组的控制,Environment Controls 环境的控制,Panel Booth Testing Area 品评单间的测试区域 Sensory evaluation of products 产品的感官品评 Descriptive Evaluation 6-Like Slightly有点喜欢; 2-Dislike Very Much很不喜欢; 7-Like Moderately喜欢; 3-Dislike Moderately不喜欢; 8-Like Very Much 很喜欢; 4-D

9、islike Slightly有点不喜欢; 9-Like Extremely非常喜欢 5-Neither Like Nor Dislike;既不喜欢也不讨厌,Hedonic/Preference tests 喜好测试,三角测试 Triangle Test 姓名(Name): P18_ 部门(Department): _ 您将品尝到3个样品。两个是同样的，一个是不同的。 You have been given three samples. Two of these samples are identical, one is different. 请集中注意力，依次品尝这些样品，区分它们的不同之处

10、： Please taste these samples in the order given below in concentrating your attention on the difference in flavour: 圈出与其他两个不同的样品号 Circle the number of the different sample. 837 911 586 标出它们之间的差别大小程度 Indicate the degree of difference in flavour between the identical samples and the different one. 评注：

11、 Comments 不同的样品： Different sample _ 相同的样品： Identical samples _,Discriminative tests 辨别测试,对比测试 Duo-Trio Test 姓名(Name): _ 部门(Department): _ 我们会给您一个标为“R”的参照样品和另外两个样品。 You have been given a reference sample “R” and two coded samples. 请先品尝样品“R”，然后再品尝其他两个。在后两个样品中选出您认为与“R”相同的样品。 Please smell and taste the

12、reference sample “R” first, followed by the two coded samples. Indicate which of the two coded samples is identical to the reference sample “R”. 如果您认为两个样品与“R”都很相似，您必须在其中猜选一个。 If no difference is apparent between the two unknown samples, you must guess. 可以允许重复品尝 Retasting is allowed. 圈出您认为与参照样品相同的样品号

13、 Circle the number of the identical sample. 278 543 评注： Comments 278 543 _ _ _ _ _ _,Discriminative tests 辨别测试,DIFFERENCE FROM CONTROL TEST 五选二测试 TWO OUT OF FIVE TEST 姓名(Name): P20_ 部门(Department): _ 我们会给您 五个样品.其中两个是同样的, 而另三个相同成为一组. You have been given five samples. Two of these five samples belong

14、to one set; the other three belong to another set. 请选择两个相同的样品, 在这两个样品编号边打上X记号 Identify the two samples which belong together by placing an X after the code number. 同时请在评语栏里填上作相应评价 Please comment accordingly. 编号CODE _ _ _ _ _ _ _ _ 评语COMMENTS: Two samples group _ Three samples group _,Discriminative

15、tests 辨别测试,排序测试 Ranking Test 姓名(Name): _部门(Department): _ 您将品尝到不同甜味强度的三个样品 You have been given three samples of different sweetness intensity. 请闻其香味，尝其味，并回答下列问题 Please smell and taste these samples and answer the following question: 399 525 833 按其甜味强度依次排列 Rank these three products in ascending order

16、 of their sweetness : No.1 _ No.2 _ No.3 _ (No.1 为 甜度最低，No.3为甜度最强) (With No.1 of the least sweetness and No.3 of the highest sweetness) 评注： Comments _ _ _,Discriminative tests 辨别测试,打分测试 Scaling Test 姓名(Name): _部门(Department): _ 产品(Product) :Milk powder(4) Utilisation of the CATEGORY scale Samples: 9

17、 8 7 SWEET: 0 1 2 3 4 5 6 3 7 8 SWEET: 0 1 2 3 4 5 6 2 4 9 SWEET: 0 1 2 3 4 5 6 5 2 7 SWEET: 0 1 2 3 4 5 6 0. Absence 1. Just Detectable 2. Weak 3. Moderate 4. Slightly Strong 5. Strong 6. Very Strong,Discriminative tests 辨别测试,打分测试 Scaling Test 姓名(Name): _部门(Department): _ Intensity rating scale wit

18、h the utilisation of Difference. Please rate according to the reference Ref. A: 0 10 Ref. B: 0 10 Samples: 0 10 2 6 8 0 10 4 5 7 0 10 1 7 6 0 10 5 3 4 Absent Moderate Very Intense,Discriminative tests 辨别测试,DIFFERENCE FROM CONTROL TEST Name : _ Date : 3/11/01_ Type of Sample : * Instructions : .You h

19、ave received 4 samples (3-digit coded) and a control sample marked “R”. .Taste the control sample marked “R” first. Then taste the test sample marked “XXX” in the indicated sequence order. .Assess the overall sensory differences between the two samples using the scale Below. Comment on the differenc

20、es. 0 1 2 3 4 5 6 7 8 9 10 No Moderate Extreme Diff Diff .Remember that a Duplicate Control is the sample some of the time. * Code Degree of Difference Comments on Difference(Strength / Pro.) _732_ _ _ _581_ _ _ _463_ _ _ _694_ _ _,Discriminative tests 辨别测试,姓名(Name): _ 部门(Department): _ 您将品尝到7种奶粉的样品,请闻其香，尝其味，并描述其口味 You have been given seven Milk powder products.Please smell and taste the samples and try to describe the perceived taste. 确认您是否能感觉出下列描述，若不能，请将此描述此划去，若您想到另外的描述，请添加 Confirm if you can feel these listed descriptions in the following products.