
【国外标准】 Standard Guide for Time-Intensity Evaluation of Sensory Attributes
本网站 发布时间:
2024-02-28
开通会员免费在线看70000余条国内标准,赠送文本下载次数,单本最低仅合13.3元!还可享标准出版进度查询、定制跟踪推送、标准查新等超多特权!  
查看详情>>

适用范围:
5.1 The purpose of time-intensity measurements is to establish the pattern of development and decline of a particular sensory characteristic under study. T-I evaluations are applicable when measurements at a single time point (an averaging process) are not sufficient to distinguish products that have very different temporal characteristics. As pointed out by Lee and Pangborn (2)3, “This averaging process results in the masking or complete loss of important information such as rate of onset of stimulation, time and duration of maximum intensity, rate of decay of perceived intensity, time of extinction, and total duration of the entire process.”5.2 Products rated similarly using traditional single point techniques of product profiling may provide very different temporal sensory experiences to the consumer. Acceptability of the product may be affected, and traditional descriptive methodology does not reflect the changes in an attribute's intensity over time.5.3 T-I has applications for a variety of products. Examples include: food products, ranging from short-term sweetness in a beverage to long-term elasticity in chewing gum; personal care products, measuring the development and longevity of shampoo lather and the residual skin feel of a skin cream; household care products, monitoring the intensity of scents over time; pharmaceuticals, monitoring skin cooling after application of a topical analgesic. Auditory signals or visual changes in products can also be evaluated by the T-I technique.1.1 This guide covers procedures for conducting and analyzing time-intensity (T-I) evaluations of products or other sensory stimuli. Time-intensity is the measurement of the intensity of a single sensory sensation over time in response to a single exposure to a product or other sensory stimulus. Simultaneous evaluations of multiple sensory attributes are possible, although are outside of the scope of this document. See Reference List for more information.1.2 This guide utilizes a specially trained panel to measure the intensity of a single continuous sensation during the time from initial exposure:1.2.1 To its extinction,1.2.2 To a specified intensity, or1.2.3 To a predetermined limit of time.1.3 Applications not covered in this guide include measuring:1.3.1 Multiple sensations,1.3.2 Multiple exposures within a single measurement, and1.3.3 Qualitative or hedonic changes in the perceived sensation.1.4 This guide includes protocols for the selection and training of judges, descriptions and use of physical data collection devices, and methods of data handling, summarization, and statistical analysis. Illustration of two different data handling and analysis approaches are included in the appendixes.1.5 This guide is not applicable to measure product shelf life or stability that require evaluations over extended time.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
标准号:
ASTM E1909-13(2017)
标准名称:
Standard Guide for Time-Intensity Evaluation of Sensory Attributes
英文名称:
Standard Guide for Time-Intensity Evaluation of Sensory Attributes标准状态:
Active-
发布日期:
-
实施日期:
出版语种:
- 其它标准
- 上一篇: ASTM E1908-20 Standard Practice for Sample Selection of Debris Waste from a Building Renovation or Lead Abatement Project for Toxicity Characteristic Leaching Procedure (TCLP) Testing for Leachable Lead (Pb)
- 下一篇: ASTM E191-64(2017) Standard Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds (Withdrawn 2024)
- 推荐标准
- ASTM 51026-23 Standard Practice for Using the Fricke Dosimetry System
- ASTM 52303-24 Standard Guide for Absorbed-Dose Mapping in Radiation Processing Facilities
- ASTM A1-00(2018) Standard Specification for Carbon Steel Tee Rails
- ASTM A1000/A1000M-17(2023) Standard Specification for Steel Wire, Carbon and Alloy Specialty Spring Quality
- ASTM A1001-18 Standard Specification for High-Strength Steel Castings in Heavy Sections
- ASTM A1002-16(2020) Standard Specification for Castings, Nickel-Aluminum Ordered Alloy
- ASTM A1004/A1004M-99(2018) Standard Practice for Establishing Conformance to the Minimum Expected Corrosion Characteristics of Metallic, Painted-Metallic, and Nonmetallic-Coated Steel Sheet Intended for Use as Cold Formed Framing Members
- ASTM A1009-18 Standard Specification for Soft Magnetic MnZn Ferrite Core Materials for Transformer and Inductor Applications
- ASTM A101-04(2019) Standard Specification for Ferrochromium
- ASTM A1010/A1010M-13(2018) Standard Specification for Higher-Strength Martensitic Stainless Steel Plate, Sheet, and Strip
- ASTM A1012-10(2021) Standard Specification for Seamless and Welded Ferritic, Austenitic and Duplex Alloy Steel Condenser and Heat Exchanger Tubes With Integral Fins
- ASTM A1015-01(2018) Standard Guide for Videoborescoping of Tubular Products for Sanitary Applications
- ASTM A1016/A1016M-23 Standard Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
- ASTM A102-04(2019) Standard Specification for Ferrovanadium
- ASTM A1021/A1021M-20 Standard Specification for Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service