Non-destructive evaluation of tomato based on optical scattering
Toru Katsumata1, Hiroaki Aizawa1, Shuji Komuro1
1Faculty of Science and Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan.
The Review of Scientific Instruments
|May 3, 2019
Summary
Optical scattering techniques enable non-destructive sugar concentration estimation in tomatoes. Evaluations at a 160° scattering angle provide accurate, linear results for quality control.
Area of Science:
- Agricultural Engineering
- Optical Physics
- Food Science
Background:
- Non-destructive evaluation (NDE) methods are crucial for agricultural product quality assessment.
- Accurate determination of tomato sugar content is vital for consumer acceptance and processing.
Purpose of the Study:
- To develop and validate equipment for non-destructive estimation of tomato sugar concentration.
- To investigate the relationship between light scattering properties and sugar content in tomatoes.
Main Methods:
- Utilized scattering spectra, angular intensity distributions, and scattering images for NDE.
- Employed various light sources including halogen lamps and LEDs (white, yellow, red, near-infrared at 850 nm and 940 nm).
- Analyzed scattering intensity variations with sugar concentration at different angles, particularly around 160°.
Main Results:
- A linear correlation was observed between scattering intensity and tomato sugar concentration across tested wavelengths.
- The gradient of calibration lines varied with scattering angle (θ).
- Optimal linearity and a large gradient, with a correlation coefficient (R) near 1, were achieved at approximately θ = 160°.
Conclusions:
- Developed equipment effectively estimates tomato sugar concentration using optical scattering.
- The 160° scattering angle is highly suitable for accurate, non-destructive sugar content analysis in tomatoes.
- This technique offers a promising tool for real-time quality assessment in the tomato industry.
Related Concept Videos
01:12Non-destructive Tests for Concrete Strength
526
The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it...
526
01:15Scatter Plot
10.8K
The most common and easiest way to display the relationship between two variables, x and y, is a scatter plot. A scatter plot shows the direction of a relationship between the variables. A clear direction happens when there is either:
10.8K
03:00Self-Evaluation: Self-Enhancement and Self-Verification
5.8K
Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
5.8K
02:24Properties of Enantiomers and Optical Activity
21.5K
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
21.5K
01:15Nursing Evaluation
4.2K
The evaluation stage signals the end of the nursing process. The nurse gathers evaluative data to assess whether or not the patient has attained the expected results. Whereas the nurse collects data in the nursing assessment to identify the patient's health concerns, the evaluation stage data determines if the indicated health issues are resolved. Evaluative data collection includes two sections: the data acquired to evaluate patient outcomes and the time criteria for data collection.
4.2K
01:18Imaging Biological Samples with Optical Microscopy
9.0K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
9.0K