Effects of Concord grape juice on cognitive and motor deficits in aging

Nutrition ◽  
2006 ◽  
Vol 22 (3) ◽  
pp. 295-302 ◽  
Author(s):  
Barbara Shukitt-Hale ◽  
Amanda Carey ◽  
Laura Simon ◽  
David A. Mark ◽  
James A. Joseph
Keyword(s):  
Grape Juice ◽  
Motor Deficits ◽  
Concord Grape

Detection of Adulteration in Dark Colored Fruit Juices

1968 ◽  
Vol 51 (4) ◽  
pp. 937-939 ◽  
Author(s):  
J Fitelson
Keyword(s):  
Chromatographic Method ◽  
Grape Juice ◽  
Fruit Juices ◽  
Central Spot ◽  
Low Concentrations ◽  
Concord Grape ◽  
Grape Juices

Abstract The official, first action paper chromatographic method for detecting adulteration in Concord grape juice has been applied to several dark colored fruit juices, including cherry, raspberry, blackberry, and strawberry. In contrast to the complicated anthocyanin patterns on the paper chromatograms of grape juices, these juices show simple patterns of one or two major red bands. Since most advUterants have more complicated anthocyanin patterns, they can be readily detected by this method, even at low concentrations. If adulteration cannot be detected by the anthocyanin patterns, it can usually be shown by the anthocyanidin patterns. In this paper chromatographic test, three separate anthocyanidin spots are formed. The dark colored juices tested here showed most of the anthocyanidin color in the central spot, whereas the possible adulterants showed other patterns. Therefore, mixtures will have abnormal anthocyanidin patterns in this test. Examples of both laboratory-prepared adulterated juices and some adulterated commercial juices are given.

Identification of Grape Varieties

1965 ◽  
Vol 48 (3) ◽  
pp. 525-530
Author(s):  
A C Rice
Keyword(s):  
Chromatographic Separation ◽  
Quantitative Data ◽  
Spectral Characteristics ◽  
Grape Juice ◽  
Concord Grape ◽  
Anthocyanin Pigments ◽  
Grape Varieties ◽  
Paper Chromatographic Separation ◽  
Time Of Harvest

Abstract The spectrophotometric characteristics of Concord grape juice have been found to vary greatly with season, growing area, and time of harvest. As a result, the spectral characteristics of the juice are not a suitable basis for a method to detect adulteration of the juice. The paper chromatographic separation of the anthocyanin pigments in Concord grape juice has been used successfully to obtain pure components, of which 10 have been identified. Quantitative data can now be obtained from the paper chromatograms by a Beckman Anatrol. A measure of the ratios of several of the anthocyanin pigments present in Concord juice is promising as a method of detecting adulteration.

Fluorometric Determination of Methyl Anthranilate in Concord Grape Juice

1976 ◽  
Vol 59 (2) ◽  
pp. 269-272
Author(s):  
Donald J Casimir ◽  
James C Moyer ◽  
Leonard R Mattick
Keyword(s):  
Correlation Coefficient ◽  
Grape Juice ◽  
Methyl Anthranilate ◽  
Fluorometric Method ◽  
Fluorometric Determination ◽  
Juice Concentrate ◽  
Concord Grape ◽  
Colorimetric Procedure

Abstract A method is described for the determination of methyl anthranilate in Concord grape products. A sample of juice, concentrate, pulp, or essence is steam distilled in a micro-Kjeldahl unit and the fluorescence of the distillate collected in pH 7 buffer is measured directly with a fluorometer. The method is rapid and sensitive to 0.1 ppm methyl anthranilate. A correlation coefficient of 0.988 was found between the AOAC colorimetric procedure and the fluorometric method.

Concord grape juice attenuates platelet aggregation, serum cholesterol and development of atheroma in hypercholesterolemic rabbits

2007 ◽  
Vol 190 (1) ◽  
pp. 135-142 ◽  
Author(s):  
Dhanansayan Shanmuganayagam ◽  
Thomas F. Warner ◽  
Christian G. Krueger ◽  
Jess D. Reed ◽  
John D. Folts
Keyword(s):  
Platelet Aggregation ◽  
Serum Cholesterol ◽  
Grape Juice ◽  
Concord Grape

scholarly journals Effects of Concentration Prior to Cold-Stabilization on Anthocyanin Stability in Concord Grape Juice

2010 ◽  
Vol 58 (21) ◽  
pp. 11325-11332 ◽  
Author(s):  
Kristin S. Alongi ◽  
Olga I. Padilla-Zakour ◽  
Gavin L. Sacks
Keyword(s):  
Grape Juice ◽  
Concord Grape ◽  
Anthocyanin Stability

Effects of Concord Grape Juice on Appetite, Diet, Body Weight, Lipid Profile, and Antioxidant Status of Adults

2009 ◽  
Vol 28 (5) ◽  
pp. 574-582 ◽  
Author(s):  
James H Hollis ◽  
Jenny A Houchins ◽  
Jeffrey B Blumberg ◽  
Richard D Mattes
Keyword(s):  
Body Weight ◽  
Lipid Profile ◽  
Antioxidant Status ◽  
Grape Juice ◽  
Concord Grape
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