Assessing firmness and SSC of pears based on absorption and scattering properties using an automatic integrating sphere system from 400 to 1150 nm
| Autor: | Xueming He, Xiuqin Rao, Zhenhuan Fang, Xiaping Fu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
genetic structures Scattering business.industry Analytical chemistry 04 agricultural and veterinary sciences Horticulture 040401 food science Imaging phantom 040501 horticulture Modeling and simulation 0404 agricultural biotechnology Optics Integrating sphere Attenuation coefficient Content (measure theory) Transmittance 0405 other agricultural sciences business Absorption (electromagnetic radiation) Agronomy and Crop Science Food Science |
| Zdroj: | Postharvest Biology and Technology. 121:62-70 |
| ISSN: | 0925-5214 |
| Popis: | It is important to understand the fundamental optical properties of fruit tissues when applying optical techniques for quality inspection of fruits. An automatic integrating sphere (AIS) system was used to measure the total reflectance and total transmittance of pear tissue in the wavelength range of 400–1150 nm. These two measurements were used to estimate the bulk optical properties (absorption coefficient μ a and reduced scattering coefficient μ ’ s ) of tissue samples using inverse adding-doubling (IAD) method. The accuracy of AIS system was verified by using both an INO solid phantom and a set of liquid phantoms. Relationships between soluble solids content (SSC), firmness and the optical properties were investigated, with coefficients of determination of 0.40 and 0.48 for validation, respectively. In addition, the μ a decreased with the increase of shelf-life time, while the μ ’ s did just the opposite. This study demonstrated the feasibility of detecting multiple qualities of pears by investigating the tissue optical properties. For further research, the measured optical properties of pear tissues can be used for modeling and simulation of light-fruit interaction. |
| Databáze: | OpenAIRE |
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