Sensory Analysis
Andreia Bianchini
Author
06/14/2022
Added
16
Plays
Description
Short video describing sensory analysis as one of the roles as a Food Scientist.
Searchable Transcript
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- [00:00:02.163](gentle music)
- [00:00:12.200]Could you detect the difference
- [00:00:13.770]between one product and another?
- [00:00:15.800]Does the fat free cream cheese taste the same
- [00:00:18.530]as the regular one,
- [00:00:19.960]or does an ingredient change make a product better
- [00:00:22.670]than the competition?
- [00:00:24.070]These questions can be answered with the help
- [00:00:26.150]of sensory analysis,
- [00:00:27.770]which is used to detect differences
- [00:00:29.860]and describe sensory attributes for product acceptability.
- [00:00:33.820]Sensory evaluation applies statistics
- [00:00:36.140]in the analysis of human senses,
- [00:00:38.090]sight, hearing, smell, taste and touch,
- [00:00:40.720]to test consumer preferences.
- [00:00:43.460]For example, color and appearance are judged by sight,
- [00:00:46.420]flavor by the senses of smell and taste,
- [00:00:49.020]and texture by touch.
- [00:00:51.160]Even though instruments,
- [00:00:52.310]such as colorimeters and texture analyzers
- [00:00:54.810]can be used to measure sensory attributes,
- [00:00:57.460]sensory analysis conducted by humans play a significant role
- [00:01:01.350]in measuring the quality of a product.
- [00:01:04.210]A well conducted sensory evaluation
- [00:01:06.410]cannot be replaced by instruments
- [00:01:08.350]when assessing consumer perception.
- [00:01:10.760]There are many sensory evaluation methods,
- [00:01:13.220]and choosing the right one depends on the goal.
- [00:01:15.660]For example, a difference test is used
- [00:01:18.320]to identify differences between products.
- [00:01:21.440]Acceptance tests are used to measure consumer preference
- [00:01:24.840]and what is liked or disliked about a product.
- [00:01:27.870]Preference tests determine an individual's preferred choice
- [00:01:31.290]between two or more products.
- [00:01:33.540]Results from these tests may lead to improvements
- [00:01:36.440]in product formulation to increase consumer acceptance.
- [00:01:40.210]When conducting a sensory panel,
- [00:01:42.250]samples should be prepared under sanitary conditions
- [00:01:45.430]and served at the appropriate temperature for consumption.
- [00:01:48.740]The product should always be presented
- [00:01:50.820]and served in a standardized way.
- [00:01:53.320]It is also essential to present randomized samples
- [00:01:56.340]to prevent bias from panelists.
- [00:01:58.370]Samples are assigned a random code
- [00:02:00.760]to keep samples anonymous.
- [00:02:02.940]Usually, panelists are separated
- [00:02:05.010]and seated at individual booths
- [00:02:06.910]so they cannot compare responses.
- [00:02:09.140]To maintain consistency,
- [00:02:10.740]the area is kept quiet, free of voters,
- [00:02:13.510]and the lighting and temperature are kept constant
- [00:02:16.020]to ensure that the testing environment
- [00:02:18.010]is stable during evaluation.
- [00:02:20.340]Commonly, computers or paper questionnaires
- [00:02:23.170]are used for data collection.
- [00:02:25.240]During the evaluation process,
- [00:02:26.880]one randomized sample is tested at a time.
- [00:02:29.850]The first step is to evaluate the appearance
- [00:02:32.050]and odor of the product.
- [00:02:33.940]Next, the panelists are asked to chew and eat all,
- [00:02:37.210]or a small portion of the sample.
- [00:02:39.360]After trying the sample, questions related to flavor,
- [00:02:42.190]texture, and sound are answered by the panelists.
- [00:02:45.750]Usually, a comment section is included
- [00:02:47.840]at the end of the questionnaire.
- [00:02:49.480]Additional comments are valuable
- [00:02:51.080]for product improvement.
- [00:02:52.820]Later, the data is evaluated using statistics
- [00:02:55.760]and conclusions are made according to
- [00:02:57.500]the panelists' responses.
- [00:02:59.490]As a result, food science, sensory analysis,
- [00:03:02.410]and data interpretation are needed
- [00:03:04.260]to understand consumer preferences.
- [00:03:07.529](gentle music continues)
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