Abstract:
Pomegranate fruit maturity status is commonly asse
ssed based on external (skin)
colour, juice colour and acidity of juice. Some res
earchers have studied the correlation
between the parameters of the skin colour and acidi
ty, total soluble solids, citric acid and
anthocyanins. This study describes the relationship
existing between solar radiation and a
colorimetric maturity index in the pomegranate vari
etal group “Mollar de Elche”. We
propose a fuzzy methodology. The aim of this kind o
f study is to obtain on estimation a
range of possible values that reflects reality. Usi
ng this methodology four phases were
obtained, in which there is no relationship between
radiation and the colorimetric
Maturity Index (MIc) in phases 1 and 4, but there i
s such a relationship in phases 2 and 3.
Fuzzy math demonstrates the positive relationship b
etween radiation and
MIc
,
confirming that fuzzy regression is appropriate for
making estimations that reflect reality
among variables showing a weak relationship. There
is a high degree of uncertainty in the
relationship between the colorimetric maturity inde
x and the incident radiation. The
individual values of radiation do not correspond to
one sole value of
MIc
, but to a wide
range of the same, due to several factors, such as
fruit orientation, luminosity, etc. Fuzzy
math reveals the positive relationship between net
radiation and MIc in phases 2 and 3.
All this shows that the fuzzy regression may be app
ropriate for making estimations reflect
reality when the variables show a weak relationship
.
Keywords:
Colour, Fuzzy, Maturity index, Net radiation,
Punica grantum
.
