Relationships between dissolved free amino acids, chemical composition and growth of the marine diatom Chaetoceros debile

1983 ◽  
Vol 77 (1) ◽  
pp. 93-100 ◽  
Author(s):  
S. A. Poulet ◽  
v. Martin-J�z�quel
Keyword(s):  
Amino Acids ◽  
Chemical Composition ◽  
Free Amino Acids ◽  
Free Amino ◽  
Marine Diatom

Kareish cheese prepared from ultrafiltered milk

1987 ◽  
Vol 54 (4) ◽  
pp. 545-550 ◽  
Author(s):  
Ali I. El-Zayat ◽  
Mohamed M. Omar
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Chemical Composition ◽  
Free Amino Acids ◽  
Free Amino ◽  
Organoleptic Properties

SummaryKareish cheese was made from ultrafiltered milk (UF) and standard milk and the chemical composition, organoleptic properties and microstructure of the cheese compared. Cheese made with the UF had higher moisture, protein, fat, pH, soluble N, non-protein N, amino acid N, tryptophan and free amino acids than the standard cheese. The microstructure of both types of cheese was very similar, while the organoleptic properties were more acceptable in the UF cheese.

scholarly journals Chemical Composition, Antioxidant and Antihyperglycemic Activities of the Wild Lactarius deliciosus from China

Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1357 ◽  
Author(s):  
Zhou Xu ◽  
Liang Fu ◽  
Shiling Feng ◽  
Ming Yuan ◽  
Yan Huang ◽  
...  
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Chemical Composition ◽  
Free Amino Acids ◽  
Free Amino ◽  
Aqueous Extracts ◽  
Wild Mushroom ◽  
Lactarius Deliciosus ◽  
Volatile Aroma ◽  
Volatile Aroma Compounds

The wild mushroom Lactarius deliciosus from China was studied for the first time to obtain information about its chemical composition, antioxidant, and antihyperglycemic activities. Nutritional value, dietary fiber, fatty acids, metal elements, free sugars, free amino acids, organic acids, flavor 5′-nucleotides, and volatile aroma compounds were determined. Potential antioxidant and antihyperglycemic activities were also tested by investigating 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radicals scavenging activities, ferric ion reducing activity, as well as α-amylase and α-glucosidase inhibitory activities using ethanol and aqueous extracts. The results showed that L. deliciosus was a good wild mushroom with high protein, carbohydrate, and dietary fiber contents, while low in fat and calorie, extensive unsaturated fatty acids contents, with negligible health risks about harmful metal elements. Twenty kinds of free amino acids were detected with a total content 3389.45 mg per 100 g dw. Flavor 5′-nucleotides including 5′-CMP, 5′-UMP, 5′-IMP, and 5′-AMP were 929.85, 45.21, 311.75, and 14.49 mg per 100 g dw, respectively. Mannitol (7825.00 mg per 100 g dw) was the main free sugar, and quininic acid (729.84 mg per 100 g dw) was the main organic acid. Twenty-five kinds of volatile aroma compounds were identified, acids (84.23%) were the most abundant compounds based on content, while aldehydes (15 of 25) were the most abundant compounds based on variety. In addition, both ethanol and aqueous extracts from L. deliciosus exhibited excellent antioxidant activity. While in antihyperglycemic activity tests, only ethanol extracts showed inhibitory effects on α-amylase and α-glucosidase.

Accumulation of free amino acids in marine diatom resting cells during rejuvenation

2014 ◽  
Vol 85 ◽  
pp. 483-490 ◽  
Author(s):  
Changping Chen ◽  
Qingyu Li ◽  
Qianqian Zhou ◽  
Lin Sun ◽  
Minhua Zheng ◽  
...  
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Marine Diatom ◽  
Resting Cells

Chemical Composition of Shrimp Flesh (Parapenaeus spp.) and its Nutritive Value

1969 ◽  
Vol 26 (11) ◽  
pp. 2969-2974 ◽  
Author(s):  
Teofil Dabrowski ◽  
Edward Kolakowski ◽  
Barbara Karnicka
Keyword(s):  
Amino Acids ◽  
Chemical Composition ◽  
Total Protein ◽  
Free Amino Acids ◽  
Free Amino ◽  
Nutritive Value ◽  
Nonprotein Nitrogen ◽  
Average Composition ◽  
Amine Nitrogen ◽  
Pure Protein

The chemical composition and yield of edible shrimp (Parapenaeus spp.) were determined. Shrimp of 15.5–23.4 cm and mean weight of 37.3 g yielded from 47.2 to 55.1% of flesh (mean 51.3%). Average composition of flesh was: water 76.74%, fat 0.91%, ash 1.71%, total phosphorus 0.49%, and total protein 22.07%, the last being made up of 76.5% pure protein. Shrimp flesh protein contained a large amount of arginine, histidine, and proline, but not so much threonine, methionine, valine, lysine, and tryptophane. Amine nitrogen constituted 39.5% of the total nonprotein nitrogen. Its composition was mainly of the following free amino acids: glycine, arginine, proline, and alanine. In contrast to the flesh of fish, that of shrimps contained a considerable amount of free methionine.

scholarly journals GC-MS investigation of the chemical composition of honeybee drone and queen larvae homogenate

2016 ◽  
Vol 60 (1) ◽  
pp. 111-120 ◽  
Author(s):  
Valery A. Isidorov ◽  
Sławomir Bakier ◽  
Marcin Stocki
Keyword(s):  
Amino Acids ◽  
Chemical Composition ◽  
Free Amino Acids ◽  
Free Amino ◽  
Essential Amino Acids ◽  
Gas Chromatography Mass Spectrometry ◽  
Honeybee Queen ◽  
Honeybee Drone ◽  
Pharmacologically Active ◽  
Queen Larvae

Abstract Honeybee larva homogenate appears to be underrated and insufficiently explored but this homogenate is an exceptionally valuable honeybee product. Drone larva homogenate is very nutritional due to its high content of proteins, free amino acids, lipids, and carbohydrates. Moreover, the biological characteristics of honeybee larvae indicate the presence of chemical substances that may be pharmacologically active. In spite of the above, the chemical composition of honeybee larva has not gained as much attention as that of other bee products. In this study, the chemical composition of honeybee brood homogenate has been investigated using gas chromatography/mass spectrometry. As a result, it was possible to isolate as many as 115 extractive organic compounds from 6 samples of crude queen and 9 samples of drone homogenate. The main groups of substances extracted from either type of homogenate were composed of free amino acids and carbohydrates. The relative content of amino acids in queen homogenate as well as the share of essential amino acids were found to be higher than in the drone homogenate. Disaccharide trehalose was the dominant sugar in the queen larvae, whilst glucose prevailed in the drone larvae. Comparative chemical analyses of honeybee queen and drone larva homogenates have allowed us to make a preliminary inference about a higher overall value of the former.

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