scholarly journals The ascorbic acid content of the intestine of the guinea-pig

1935 ◽  
Vol 29 (1) ◽  
pp. 100-101 ◽  
Author(s):  
Sylvester Solomon Zilva
Keyword(s):  
Ascorbic Acid ◽  
Guinea Pig ◽  
Acid Content ◽  
Ascorbic Acid Content

ON STAINING FOR VITAMIN C IN TISSUES

1946 ◽  
Vol 24c (5) ◽  
pp. 182-187 ◽  
Author(s):  
Jules Tuba ◽  
George Hunter ◽  
John A. Osborne
Keyword(s):  
Ascorbic Acid ◽  
Vitamin C ◽  
Guinea Pig ◽  
Acid Content ◽  
Ascorbic Acid Content ◽  
Zona Fasciculata ◽  
Staining Solution ◽  
Apparent Relationship ◽  
Gradual Accumulation ◽  
The Rose

Guinea-pig adrenals were stained for ascorbic acid. In the normal adrenal, staining was found in both cortex and medulla though with greatest density in the zona fasciculata. The stained scorbutic adrenal showed only a few granules.The mosses Mnium cuspidatum and Mnium affine contain ascorbic acid in appreciable amounts. Following staining, fine black granules could be seen in both species. The stain intensity of the granules roughly corresponded to their relative ascorbic acid content.Having satisfactorily established the validity of the staining solution by the above experiments the development of ascorbic acid in the rose hips of R. acicularis was followed throughout the summer. There was found to be some association between the ascorbic acid and chloroplasts. With increasing maturity there developed a gradual accumulation of fine granules in the cells of the tissue as well. These granules showed no apparent relationship to any formed elements in the cells. Staining densities roughly parallel ascorbic acid content.

The Effect of the Administration of Acid and Alkaline Salts Upon the Ascorbic Acid Content of Guinea Pig Tissues

1937 ◽  
Vol 14 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Estelle E. Hawley ◽  
Ray G. Daggs ◽  
Doran J. Stephens
Keyword(s):  
Ascorbic Acid ◽  
Guinea Pig ◽  
Acid Content ◽  
Ascorbic Acid Content

scholarly journals Effect of erythorbic acid administration on ascorbic acid content in guinea pig tissues.

1986 ◽  
Vol 32 (2) ◽  
pp. 171-181 ◽  
Author(s):  
Nobuhiko ARAKAWA ◽  
Emiko SUZUKI ◽  
Tadao KURATA ◽  
Megumi OTSUKA ◽  
Choten INAGAKI
Keyword(s):  
Ascorbic Acid ◽  
Guinea Pig ◽  
Acid Content ◽  
Ascorbic Acid Content ◽  
Erythorbic Acid ◽  
Acid Administration

Vitamin C activity of D-isoascorbic acid for the guinea pig

1969 ◽  
Vol 47 (12) ◽  
pp. 985-991 ◽  
Author(s):  
Omer Pelletier ◽  
Claude Godin
Keyword(s):  
Ascorbic Acid ◽  
Vitamin C ◽  
Guinea Pig ◽  
Small Proportion ◽  
Acid Content ◽  
Guinea Pigs ◽  
Ascorbic Acid Content ◽  
Similar Response ◽  
Synthetic Diet ◽  
Isoascorbic Acid

Guinea pigs fed with a synthetic diet or a rabbit ration were depleted of vitamin C for 17 days. The scorbutic animals were treated daily during 2 months with 40 mg D-isoascorbic acid (IAA) or 2 mg L-ascorbic acid (AA). Both isomers restored the growth of the animals and caused the disappearance of scorbutic symptoms. For 3 weeks, the two diets gave similar response, after which the animals fed with the rabbit ration grew much less. Animals given IAA ate less and had smaller weight gains than those given AA; this effect was overcome by pair-feeding. Only a small proportion of administered IAA was recovered in the organs and in the urine. The total ascorbic acid content (AA and IAA) of the IAA-treated animals was less than that of the AA-treated animals. The low AA content of the organs of the IAA-treated animals indicated that IAA had no significant sparing action on AA.

Analysis of ascorbic acid content in various fruits and vegetables by spectrofluorimetric methods

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
A Haskovic ◽  
A Copra Janicijevic ◽  
A Topcagic ◽  
L Klepo ◽  
A Kapur ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Acid Content ◽  
Fruits And Vegetables ◽  
Ascorbic Acid Content

scholarly journals Silicon attenuates calcium deficiency by increasing ascorbic acid content, growth and quality of cabbage leaves

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dalila Lopes da Silva ◽  
Renato de Mello Prado ◽  
Luis Felipe Lata Tenesaca ◽  
José Lucas Farias da Silva ◽  
Ben-Hur Mattiuz
Keyword(s):  
Ascorbic Acid ◽  
Nutrient Solution ◽  
Acid Content ◽  
Dry Matter ◽  
Ascorbic Acid Content ◽  
Calcium Deficiency ◽  
Ca Deficiency ◽  
Leaf Water Loss ◽  
Nutrient Solutions

AbstractCalcium (Ca) deficiency in cabbage plants induces oxidative damage, hampering growth and decreasing quality, however, it is hypothesized that silicon (Si) added to the nutrient solution may alleviate crop losses. Therefore, this study aims at evaluating whether silicon supplied in the nutrient solution reduces, in fact, the calcium deficiency effects on cabbage plants. In a greenhouse, cabbage plants were grown using nutrient solutions with Ca sufficiency and Ca deficiency (5 mM) without and with added silicon (2.5 mM), arranged as a 2 × 2 factorial in randomized blocks, with five replications. At 91 days after transplanting, the plants were harvested for biological evaluations. In the treatment without added Si, Ca deficiency promoted oxidative stress, low antioxidant content, decreased dry matter, and lower quality leaf. On the other hand, added Si attenuated Ca deficiency in cabbage by decreasing cell extravasation while increasing both ascorbic acid content and fresh and dry matter, providing firmer leaves due to diminished leaf water loss after harvesting. We highlighted the agronomic importance of Si added to the nutrient solution, especially in crops at risk of Ca deficiency.

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