Search Results

You are looking at 1 - 10 of 224 items for :

  • Refine by Access: All x
Clear All
Full access

Jessica D. Lubell and Mark H. Brand

plant petal tissue, a standard white background was placed behind each leaf when a CIELAB measurement was taken ( Little, 1964 ). In addition to the CIELAB coordinated value, L *, the coordinates of hue angle (tan −1b*/a*), and chroma ( a *2 + b *2

Free access

Michele Renee Warmund

of each nut was selected for color measurement. Kernel color (L*, chroma, and hue angle) was recorded using a handheld spectrophotometer (CM-2600d; Konica Minolta Corp., Ramsey, NJ) with a 6-mm-diameter aperture and specular light was included. Two

Free access

Brian A. Kahn and William G. McGlynn

samples. Duplicates then were averaged to give a final reading for each of the three replications. Readings were taken as CIE L* a* b* values using the D65 Standard Illuminant ( Commission Internationale de l'Éclairage, 1978 ). Hue angle for samples was

Free access

Kate A. Nishijima, Marisa M. Wall, Maureen M. Fitch, Lionel S. Sugiyama, Ronald C. Keith, and Wayne T. Nishijima

. IY responses were analyzed in the colorimeter studies using a Minolta CR-300 chromometer (Minolta Corp., Ramsey, NJ). Hue angle (H°), which quantifies color in the L* C* H color space where 0° = red, 90° = yellow, 180° = green, and 270° = blue, was

Free access

Andrew R. East, David J. Tanner, Jenny J. Jobling, Kate M. Maguire, and A. John Mawson

identified by eye and marked. This location was measured on each successive occasion at the treatment temperature (0 or 20 °C). Fruit that recorded a hue angle of less than 90° at the onset of the experiment were considered not to have any significant green

Full access

Adrian D. Berry, Steven A. Sargent, Marcio Eduardo Canto Pereira, and Donald J. Huber

–Wehner score of ≤3. Peel color at the equatorial region was monitored during storage by reflectance colorimetry (hue* angle) with a chroma meter (model CR-400; Konica Minolta, Tokyo, Japan) operating with a C illuminant and 11-mm diameter aperture according

Free access

Oscar Andrés Del Angel-Coronel, Juan Guillermo Cruz-Castillo, Javier De La Cruz-Medina, and Franco Famiani

lightness (L*), hue angle (h), and chroma (C*) values are reported according to MacGuire (1992) . The fruit weight loss during the postharvest period was determined by weighing the fruits daily and was expressed as a percentage of the initial weight at

Free access

Lidia Lozano, Ignasi Iglesias, Diego Micheletti, Michela Troggio, Satish Kumar, Richard K. Volz, Andrew C. Allan, David Chagné, and Susan E. Gardiner

* and b* scales extend from –60 to 60; a* ranges from green (–a*) to red (+a*) and b* ranges from blue (–b*) to yellow (+b*). Hue angle was calculated as described by McGuire (1992) and expressed in degrees; a*/b* was also calculated. Total

Open access

Catherine E. Belisle, Steven A. Sargent, Jeffrey K. Brecht, Germán V. Sandoya, and Charles A. Sims

lettuce heads. Color values were assessed as lightness* [L* (0 = black, 100 = white)], chroma* value (C*) (color purity: 0 = dull/low purity; 60 = bright/high purity), and hue* angle [h* (0° = red, 90° = yellow, 180° = green)]. Crispness of lettuce

Free access

Scott A. Brawner and Michele R. Warmund

; Konica Minolta, Corp., Ramsey, NJ) with a 10-mm diameter aperture and specular light was included. Two readings of husk color values (L*, chroma, and hue angle) measured on opposite sides of the unhulled fruit were averaged. The L* value ranges from 0