F-751 Avocado Operation Manual Rev. 1/25/2023
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Felix Instruments
1554 NE 3rd Ave
Camas, WA 98607, USA
Phone: +1 (360) 833-8835
Fax: +1 (360) 833-1914
www.felixinstruments.com
[email protected]
Figure 3
. Dry matter variation. Image adapted from Phetsomphou, 2000.
Measurement Variance
Factors that affect measurement variance include:
1.
Natural variation of dry matter throughout the fruit
2.
Analytical procedure
3.
Accuracy of the instrument
Natural Variation of DM in Avocados
Dry matter is not homogeneously distributed throughout the mesocarp
(flesh) of the avocado
(See Figure 3).
It is possible to see a variation up to
15% DM or more depending on where the mesocarp is sampled. Therefore,
it is critical for the user to take multiple measurements at various locations
on a single avocado to obtain the most accurate prediction for the average
DM of that single avocado.
Outer: 33.6%
Middle: 39.1%
Inner: 38.0%
Outer: 36.0%
Middle: 36.4%
Inner: 26.9%
Outer: 29.4%
Middle: 39.8%
Inner: 45.2%
