Contribution of skin and stone to texture measurements of spherical model fruits
Fruits are composite materials often surrounded by a skin and sometimes containing rigid stones (pits). To understand the contribution of skin and stone to the overall texture of the fruit, model fruits were constructed from molded gelatin spheres, with rigid inclusions and a skin layer. Cross polar...
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| Format: | Article |
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Wiley
2018
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| Online Access: | https://eprints.nottingham.ac.uk/48497/ |
| _version_ | 1848797777820123136 |
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| author | Rosenthal, Andrew J. Lacresse, Alice Voyer, Emmy |
| author_facet | Rosenthal, Andrew J. Lacresse, Alice Voyer, Emmy |
| author_sort | Rosenthal, Andrew J. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Fruits are composite materials often surrounded by a skin and sometimes containing rigid stones (pits). To understand the contribution of skin and stone to the overall texture of the fruit, model fruits were constructed from molded gelatin spheres, with rigid inclusions and a skin layer. Cross polarized light revealed the stress distribution during puncture testing and the mechanical measures of firmness, Poisson's ratio and breaking force were determined. Skin significantly raised the breaking force. Spherical stones raised the firmness—effectively reducing the deformable material in the sphere, resulting in inflated strains. Disc shaped stones compared with spherical ones, with the narrow edge normal to the force acted like an internal blade and significantly lowered the breaking force. Neither skin nor stone had any significant impact on Poisson's ratio. Three examples of real fruit (raspberries, grapes, and cherries) were tested to contextualize the findings. |
| first_indexed | 2025-11-14T20:09:16Z |
| format | Article |
| id | nottingham-48497 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:09:16Z |
| publishDate | 2018 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-484972020-05-04T19:31:04Z https://eprints.nottingham.ac.uk/48497/ Contribution of skin and stone to texture measurements of spherical model fruits Rosenthal, Andrew J. Lacresse, Alice Voyer, Emmy Fruits are composite materials often surrounded by a skin and sometimes containing rigid stones (pits). To understand the contribution of skin and stone to the overall texture of the fruit, model fruits were constructed from molded gelatin spheres, with rigid inclusions and a skin layer. Cross polarized light revealed the stress distribution during puncture testing and the mechanical measures of firmness, Poisson's ratio and breaking force were determined. Skin significantly raised the breaking force. Spherical stones raised the firmness—effectively reducing the deformable material in the sphere, resulting in inflated strains. Disc shaped stones compared with spherical ones, with the narrow edge normal to the force acted like an internal blade and significantly lowered the breaking force. Neither skin nor stone had any significant impact on Poisson's ratio. Three examples of real fruit (raspberries, grapes, and cherries) were tested to contextualize the findings. Wiley 2018-02-05 Article PeerReviewed Rosenthal, Andrew J., Lacresse, Alice and Voyer, Emmy (2018) Contribution of skin and stone to texture measurements of spherical model fruits. Journal of Texture Studies, 49 (1). pp. 23-29. ISSN 1745-4603 fruit texture; firmness; Poisson’s ratio; failure; rupture; breaking force; haptics; somasthesis; psychorheology http://onlinelibrary.wiley.com/doi/10.1111/jtxs.12314/abstract doi:10.1111/jtxs.12314 doi:10.1111/jtxs.12314 |
| spellingShingle | fruit texture; firmness; Poisson’s ratio; failure; rupture; breaking force; haptics; somasthesis; psychorheology Rosenthal, Andrew J. Lacresse, Alice Voyer, Emmy Contribution of skin and stone to texture measurements of spherical model fruits |
| title | Contribution of skin and stone to texture measurements of spherical model fruits |
| title_full | Contribution of skin and stone to texture measurements of spherical model fruits |
| title_fullStr | Contribution of skin and stone to texture measurements of spherical model fruits |
| title_full_unstemmed | Contribution of skin and stone to texture measurements of spherical model fruits |
| title_short | Contribution of skin and stone to texture measurements of spherical model fruits |
| title_sort | contribution of skin and stone to texture measurements of spherical model fruits |
| topic | fruit texture; firmness; Poisson’s ratio; failure; rupture; breaking force; haptics; somasthesis; psychorheology |
| url | https://eprints.nottingham.ac.uk/48497/ https://eprints.nottingham.ac.uk/48497/ https://eprints.nottingham.ac.uk/48497/ |