2.2. Surface color
Color (L* a* b* system) was evaluated with a colorimeter (Minolta CR-400, Osaka, Japan) using D65 illuminant lighting
conditions during the period of storage. Ten measurements were done per tray, inflorescence type and storage time. The Hue angle (h) was calculated as h ¼ tan1ðb=a Þ when a and b > 0 or h ¼ 180 þ tan1ðb=a Þ when a < 0 and b > 0; and chroma was calculated as (a2 + b2)1/2.