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Nondestructive assessment of chlorophyll content in watercress leaves by a tristimulus reflectance colorimeter
Year:
1992
Source of publication :
Postharvest Biology and Technology
Authors :
Aharoni, Nehemia
;
.
Gloter, Paula
;
.
Meir, Shimon
;
.
Philosoph-Hadas, Sonia
;
.
Volume :
2
Co-Authors:
Meir, S., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Philosoph-Hadas, S., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Gloter, P., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Aharoni, N., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
117
To page:
124
(
Total pages:
8
)
Abstract:
In the present study we have applied the nondestructive system of the Commission International d'Eclairage (CIE) for color assessment in fruits to measure chlorophyll (Chl) in senescing leaves. The extractable Chl values of various watercress leaves at different senescence stages were correlated with their quantitative color specifications, based on CIE-L*a*b* values, by the use of reflectance spectroscopy. Experimental evidence was based on correlation of 46 determinations of extracted Chl values (mg Chl/g fw) in watercress leaves with their corresponding calculated CIE-Lab values and functions - hue angle (H°) and total color difference (ΔE). Results show that better correleations exist between Chl content in watercress leaves and values of b*, L* and the ΔE function, than for a* value and the H° function. The best correlation (R2 = 0.868) was obtained between the single function number of ΔE and the extractable Chl values. Based on this correlation, a formula was derived for routine and nondestructive evaluation of Chl content in senescing watercress leaves. © 1992.
Note:
Related Files :
Chlorophyll colorimeter
Color assessment
Leaf senescence
Non-destructive assessment
Reflectance colorimeter
Watercress
Show More
Related Content
More details
DOI :
10.1016/0925-5214(92)90014-G
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28431
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:39
Scientific Publication
Nondestructive assessment of chlorophyll content in watercress leaves by a tristimulus reflectance colorimeter
2
Meir, S., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Philosoph-Hadas, S., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Gloter, P., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Aharoni, N., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Nondestructive assessment of chlorophyll content in watercress leaves by a tristimulus reflectance colorimeter
In the present study we have applied the nondestructive system of the Commission International d'Eclairage (CIE) for color assessment in fruits to measure chlorophyll (Chl) in senescing leaves. The extractable Chl values of various watercress leaves at different senescence stages were correlated with their quantitative color specifications, based on CIE-L*a*b* values, by the use of reflectance spectroscopy. Experimental evidence was based on correlation of 46 determinations of extracted Chl values (mg Chl/g fw) in watercress leaves with their corresponding calculated CIE-Lab values and functions - hue angle (H°) and total color difference (ΔE). Results show that better correleations exist between Chl content in watercress leaves and values of b*, L* and the ΔE function, than for a* value and the H° function. The best correlation (R2 = 0.868) was obtained between the single function number of ΔE and the extractable Chl values. Based on this correlation, a formula was derived for routine and nondestructive evaluation of Chl content in senescing watercress leaves. © 1992.
Scientific Publication
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