scholarly journals RNA, PROTEIN AND URIC ACID CONTENT OF BODY TISSUES OF PERIPLANETA AMERICANA (L.) AS INFLUENCED BY CORPORA ALLATA DURING OVARIAN DEVELOPMENT

1966 ◽  
Vol 130 (3) ◽  
pp. 442-449 ◽  
Author(s):  
K. K. THOMAS ◽  
J. L. NATION
Keyword(s):  
Uric Acid ◽  
Acid Content ◽  
Periplaneta Americana ◽  
Ovarian Development ◽  
Corpora Allata ◽  
Body Tissues

Determination of fatty acid content in some edible insects of Mexico

2016 ◽  
Vol 2 (1) ◽  
pp. 37-42 ◽  
Author(s):  
J.M. Pino Moreno ◽  
A. Ganguly
Keyword(s):  
Oleic Acid ◽  
Fatty Acid ◽  
Acid Content ◽  
Periplaneta Americana ◽  
Fatty Acid Content ◽  
Capric Acid ◽  
Caproic Acid ◽  
Insect Species ◽  
Edible Insects

In the present paper we have determined the fatty acid content of some edible insects of Mexico. A comparative analysis of the insect species studied in this research showed that caproic acid was present in a minimal proportion which ranged between 0.01 for Periplaneta americana (nymphs) and 0.06 (g/100 g, dry basis) for Euschistus strenuus. The highest proportion of caprilic acid (0.09) was found in Tenebrio molitor (adults). Atta sp. had the highest amount of capric acid (0.26). Polistes sp. was found to be rich in lauric acid (0.77) and for myristic acid it had the highest content (5.64). Dactylopius sp. and E. strenuus were rich in palmitic acid (14.89). Euschistus taxcoensis had the highest quantity of palmitoleic acid (12.06). Llaveia axin exhibited the highest quantity of stearic acid (22.75). Polistes sp. was found to be rich in oleic acid (38.28). The highest quantity of linoleic acid was observed in T. molitor (larvae) (10.89), and in L. axin the highest content of linolenic acid (7.82) was obtained. A comparison between the species under the present investigation revealed that, in general, the insects are poor in caproic, caprilic, capric, lauric, myristic, palmitoleic and linolenic acids, because the quantities were either minimal or could not be detected at all. They had moderate quantities of stearic, palmitic and linoleic acids and had high quantities of oleic acid. Finally it was concluded that although a particular insect species is unable to fulfil the total fatty acid need for a human, if consumed in combination they could definitely be able to supply a good amount of this highly valued nutrient.

scholarly journals THE URIC ACID CONTENT OF THE BLOOD OF NEW-BORNS

1917 ◽  
Vol 31 (1) ◽  
pp. 261-268
Author(s):  
F.B. Kingsbury ◽  
J.P. Sedgwick
Keyword(s):  
Uric Acid ◽  
Acid Content

Levels of tryptophan, 5-hydroxytryptamine, and dopamine in some tissues of the cockroach Periplaneta americana

1986 ◽  
Vol 64 (12) ◽  
pp. 2669-2673 ◽  
Author(s):  
B. Duff Sloley ◽  
Roger G. H. Downer ◽  
Cedric Gillott
Keyword(s):  
Nervous Tissue ◽  
High Performance ◽  
Periplaneta Americana ◽  
Corpora Allata ◽  
Suboesophageal Ganglion ◽  
Corpora Cardiaca ◽  
Thoracic Ganglia ◽  
Frontal Ganglion ◽  
Low Levels ◽  
Immunohistochemical Studies

Tryptophan, 5-hydroxytryptamine, and dopamine were measured in the frontal ganglion, corpora cardiaca, corpora allata, nerves of the suboesophageal ganglion, nerves of the thoracic ganglia, gut, testes, and ovaries of the cockroach Periplaneta americana using high performance liquid chromatography with electrochemical detection. 5-Hydroxytryptamine was demonstrated in the frontal ganglion, corpora cardiaca, corpora allata, and nerves of the suboesophageal ganglion but not in the gut, testes, ovaries, or nerves of the thoracic ganglia. These results quantitatively confirm immunohistochemical studies of 5-hydroxytryptamine in neurohaemal and nonneuronal tissues of the cockroach. Dopamine was found in all neurohaemal and nervous tissue examined. Dopamine was also found at low levels in the rectum. Tryptophan was found in all tissues examined.

Uric acid in the stratum argenteum of toadfishes Opsanus

1980 ◽  
Vol 58 (4) ◽  
pp. 492-496 ◽  
Author(s):  
J. A. C. Nicol
Keyword(s):  
Uric Acid ◽  
Acid Content ◽  
Thin Sheets

The outer chorioid (suprachorioid) of the eye of the toadfish Opsanus is a yellow argenteum which consists of two thin sheets. The inner one contains thin flat crystals of uric acid. The uric acid content is about 40 μg/cm2 of chorioid surface. The outer sheet contains yellow, birefringent granules, as yet uncharacterized. In conjunction with certain features of the retina, the yellow chorioid is responsible for eyeshine in the photopic eye.

Correlation of Uric Acid Content with Fragment Counts in Insect-Infested Flours and Wheat Grains

1969 ◽  
Vol 52 (4) ◽  
pp. 833-836
Author(s):  
N P Sen ◽  
Alberto W Vazquez
Keyword(s):  
Uric Acid ◽  
Acid Content ◽  
Insect Damage ◽  
Wheat Grains ◽  
X Ray

Abstract Seven samples of naturally insect-infested wheat were examined for (a) uric acid content, (b) per cent agricultural damage, (c) whole or equivalent insects, and (d) insect damage as determined by X-ray technique. Thirteen different forms of flours obtained by milling these wheat grains in a Buhler pilot mill were analyzed for uric acid and insect fragment counts. For wheat grains, the correlation between uric acid contents and X-ray data was found to be the best among the six possible intercomparisons. The results for the first break flour samples also indicated good correlation between the uric acid levels and insect fragment counts.

Stored Wheat Insect Infestation Related to Uric Acid as Determined by Liquid Chromatography

1984 ◽  
Vol 67 (3) ◽  
pp. 644-647
Author(s):  
Randy L Wehling ◽  
David L Wetzel ◽  
John R Pedersen
Keyword(s):  
Uric Acid ◽  
Liquid Chromatography ◽  
Acid Content ◽  
Sitophilus Oryzae ◽  
Correlation Coefficients ◽  
Rice Weevil ◽  
Growth Stages ◽  
Granary Weevil ◽  
Lesser Grain Borer ◽  
Late Instar

Abstract Liquid chromatography is used to measure the uric acid content of wheat internally infested by various growth stages of granary weevil (Sitophilus granarius), rice weevil (Sitophilus oryzae), and lesser grain borer (Ryzopertha dominica). Good correlation exists between numbers of insects and uric acid content of grain infested by a given stage of an internally infesting stored product insect, with correlation coefficients ranging from 0.970 to 0.998. Uric acid content of infested grain increases as the insect life cycle progresses, with granary weevil producing the greatest quantities of uric acid followed in order by rice weevil and lesser grain borer. A detection limit for the analytical procedure of less than 1.0 ppm uric acid allows detection of infestation levels as low as one kernel per 100 g grain for late instar granary weevil larvae. This limit is sufficiently sensitive to detect levels of infestation that may be commonly encountered in commerce.

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