Determination of Fruit Firmness

2141 Words9 Pages
Practical 4
Determination Of Fruit Firmness

Introduction
The development of sensors to measure fruit internal quality variable is one of the challenges of post – harvest technology. Several variables can currently be measured, including sugar content, firmness and internal disorders.
Fruit quality is related to both internal variables (firmness, sugar content, acid content and internal effect) and external variables (shape, size, external defects and damage). Increasing consumer demand for high quality has led to the development of optical, acoustic, and mechanical sensors that determines this quality.
Fruit firmness is one of the most important quality variables; it is an indirect measurement of ripeness and its accurate assessment
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upper | middle | bottom | average | | Red apple | With peel | 9.1 | 8.3 | 8.3 | 8.567 | 9.9 | 9.6 | 8.9 | 9.467 | 88.427 | | Peel off | 7.1 | 8.6 | 9.6 | 8.433 | 8.5 | 7.3 | 8.7 | 8.167 | 81.400 | Green apple | With peel | 10.0 | 7.9 | 6.1 | 8.000 | 8.6 | 7.1 | 3.2 | 6.300 | 70.118 | | Peel off | 6.3 | 5.9 | 7.0 | 6.400 | 5.6 | 5.9 | 7.3 | 6.267 | 62.110 | Plums | With peel | 2.2 | 3.0 | 2.2 | 2.290 | 2.7 | 2.1 | 2.1 | 2.430 | 23.144 | | Peel off | 1.1 | 1.7 | 1.6 | 1.433 | 1.2 | 1.5 | 1.3 | 1.300 | 13.401 |

Fruits | Maturity stages | Rep 1 | Rep 2 | Firmness (average rep 1 and rep 2), Newton | | | Side A | Side B | Side A | Side B | | Mango | unripe | Upper | 1.5 | 1.4 | 3.5 | 6.0 | 28.3608 | | | Middle | 1.4 | 1.2 | 3.4 | 3.3 | | | | Bottom | 1.5 | 2.0 | 4.5 | 5.0 | | | | Average | 1.467 | 1.533 | 3.800 | 4.767 | | | | Average for both side | 1.500 | 4.284 | | | Ripe | Upper | 1.5 | 1.4 | 1.1 | 1.6 | 11.4444 | | | Middle | 0.8 | 1.2 | 1.0 | 1.4 | | | | Bottom | 0.7 | 0.9 | 0.9 | 1.5 | | | | Average | 1.00 | 1.167 | 1.000 | 1.500 | | | | Average for both side | 1.084 | 1.250 | | | overripe | Upper | 1.0 | 0.9 | 1.0 | 1.1 | 9.1521 | | | Middle | 0.9 | 1.0 | 1.0 | 0.3 | | | | Bottom | 1.0 | 1.8 | 0.8 | 0.4 | | | | Average | 0.967 | 1.233 | 0.933 | 0.600 | | | | Average for both side | 1.100 | 0.7665 | | Pineapple | unripe | Upper | 3.4843 | 13.2864 | | | | Middle | 4.4888 | 12.8476 | | | |
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