HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Swatland, H. J. Search for Related Content PubMed Articles by Swatland, H. J.

Measurements of Light Scattering in Normal Pork Using a Fiber-Optic Goniophotometer¹

University of Guelph², Guelph, Ontario, Canada

Abstract

Light was conducted into samples of pork through a fiber-optic light guide, and transmitted light was measured by a photomultiplier connected to single optical fibers placed 8 mm from, and at angles of 0 to 90° to, the illuminating light guide. The interface between optical fibers and muscle fibers was either parallel and coaxial or was perpendicular. With no sample in position, there was a narrow cone of illumination of less than 30°. With pork samples (n = 10) in position, light was scattered so that the cone was wider and light was detected at 90° to the direction of illumination. Slightly more (P < .025) light was measured at 90° than at 0° with both parallel and perpendicular interfaces. In a second experiment a monochromator was used in front of the photomultiplier. Rayleigh scattering was detected in four of six samples measured with a perpendicular fiber interface, and the 400/700 nm transmittance ratio increased (P < .005) from 0 through to 90°. Rayleigh scattering was not detected in any of four samples measured with a parallel fiber interface.

¹ Research supported by grants from the Natural Sciences and Engineering Research Council of Canada and the Ontario Ministry of Agriculture and Food.

² Dept. of Food Sci. and Dept. of Anim. and Poult. Sci.