scholarly journals Permeability, Sugar Accumulation, and Respiration Rate in Ripening Banana Fruits

1970 ◽  
Vol 23 (5) ◽  
pp. 1143 ◽  
Author(s):  
CJ Brady ◽  
PBH O'connell ◽  
J Smydzuk ◽  
NL Wade
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Respiration Rate ◽  
Carbohydrate Content ◽  
Sugar Accumulation ◽  
Soluble Carbohydrate ◽  
Permeability Change ◽  
Pulp Tissue ◽  
Pulp Cells

The permeability of pulp tissue of banana fruits and aseptically prepared transverse slices of bananas increases before the respiratory climacteric begins. The permeability change may be measured as leakage of amino acids from pulp tissue, and is not dependent on the soluble carbohydrate content of pulp cells. During the climacteric, amino acid leakage into water increases further.

scholarly journals Carbohydrate content of insoluble elastins prepared from adult bovine and calf ligamentum nuchae and tropoelastin isolated from copper-deficient procine aorta

1971 ◽  
Vol 121 (2) ◽  
pp. 197-202 ◽  
Author(s):  
M. E. Grant ◽  
F. S. Steven ◽  
D. S. Jackson ◽  
L. B. Sandberg
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Carbohydrate Content ◽  
Amino Sugars ◽  
Collagenase Digestion ◽  
Low Concentrations ◽  
Neutral Sugars ◽  
High Concentrations ◽  
Edta Extraction

1. Insoluble elastin has been prepared by several different methods from adult bovine and calf ligamentum nuchae. Highly purified tropoelastin has been prepared from copper-deficient porcine aorta. 2. Amino acid analyses indicated that all preparations, except that obtained from calf ligamentum nuchae by using an EDTA extraction followed by collagenase digestion (preparation E6), were typical of pure elastin having high concentrations of hydrophobic and low concentrations of hydrophilic amino acids. Preparation E6 was found to contain approx. 40% collagen. 3. The determination and composition of the carbohydrates associated with these preparations is reported. With the exception of preparation E6, the insoluble elastins contained only trace amounts of neutral sugars (0.13–0.35%, w/w) and amino sugars (0.01–0.06%, w/w). The porcine tropoelastin contained virtually no carbohydrate. 4. The results suggest that carbohydrate analyses can yield valuable information about the purity of elastin preparations.

scholarly journals Mineralization of alanine enantiomers in soil treated with heavy metals and nutrients

2011 ◽  
Vol 59 (1) ◽  
pp. 49-52
Author(s):  
Pavel Formánek ◽  
Katty Rosselle ◽  
Adrien Turco ◽  
Klement Rejšek ◽  
Valerie Vranová
Keyword(s):  
Heavy Metals ◽  
Amino Acids ◽  
Heavy Metal ◽  
Amino Acid ◽  
Respiration Rate ◽  
Rate Ratio ◽  
Soil Microorganisms ◽  
Heavy Metal Stress ◽  
Mineralization Rate

This work deals with the determination of the effect of heavy metals and nutrients applied to the soil on alanine enatiomers mineralization with the main focus on evaluating the effect on L/D alanine respiration rate ratio. This study was initiated because previous research works revealed a change in L/D amino acid respiration under acid- or heavy metal-stress in soil. Generally, D-amino acids artificially supplied to soil are less utilized by microorganisms compared with their L-enantiomers. Stress of soil microorganisms cause decreased discrimination of D-amino acids utilization. Also, previous research showed that an application of fertilizers or combinations of fertilizers may affect the mineralization rate of L-amino acids differently, compared with their D-enantiomers. The results of this study show, that the effect of both heavy metals and nutrients on the L/D ratio was not clear, increasing or decreasing this ratio. Further research is necessary to broaden this study.

scholarly journals Uji Pengaruh Suhu Pengeringan pada Karakteristik Kimia dan Sensori Kaldu Bubuk Kepala Ikan Gabus (Channa striata)

2018 ◽  
Vol 6 (2) ◽  
pp. 97-106
Author(s):  
Akhmad Sobri ◽  
Herpandi Herpandi ◽  
Susi Lestari
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
Water Content ◽  
Sensory Analysis ◽  
Essential Amino Acids ◽  
Ash Content ◽  
Carbohydrate Content ◽  
Drying Temperature ◽  
Channa Striata

The purposes of this research was to investigate the proximate content, amino acid content and sensory snakehead fish (Channa striata) powder broth with the effect of drying temperature. The research was conducted on April 2016 to August 2016. The research method was used randomized block design (RBD). Drying temperature treatment used 50 oC, 60 oC and 70 oC. The parameters of this research was proximate analysis such as water content, ash content, protein content, lipid content, and carbohydrate content while for amino acid analysis only to find out the amount of essential amino acids and non-essential course and analytical sensory (appearance, flavor, texture, color and taste). Proximate content gave significant effect on protein content and there was no effect on water content, ash content, fat and carbohydrate content. Gave significant effect on sensory analysis (appearance, flavor, texture, color and taste). The concentration of protein content of the resulting broth powder ranges from 11.99% to 20.94%, there are eight types of essential amino acids and 7 types of non-essential amino acids while sensory analysis produced for sightings range from 3.72 to 4.52, flavor range between 3.8 to 4.32, textures range from 3.52 to 4.4, color range from 1.88 to 3.8 and taste range from 3.84 to 4.4.

The characterization of the 12 S "globulin" from rapeseed and its glycoprotein component

1970 ◽  
Vol 48 (10) ◽  
pp. 1096-1103 ◽  
Author(s):  
L. A. Goding ◽  
R. S. Bhatty ◽  
A. J. Finlayson
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Sedimentation Coefficient ◽  
Carbohydrate Content ◽  
Amino Terminal ◽  
Terminal Amino

A 12 S globulin was isolated from each of the two species of rapeseed (B. napus L. and B. campestris L.) and they have been shown to be similar in terms of amino acid composition, amino terminal amino acids, number of subfractions, and carbohydrate content. One of the major proteins, a glycoprotein, present in each of the 12 S aggregates, was isolated and purified. Its amino acid composition, carbohydrate content, N-terminal amino acids, and sedimentation coefficient are reported herein.

Dietary intake of tryptophan tied emotion-related impulsivity in humans

2019 ◽  
pp. 1-8 ◽  
Author(s):  
Florian Javelle ◽  
Descartes Li ◽  
Philipp Zimmer ◽  
Sheri L. Johnson
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Food Intake ◽  
Essential Amino Acid ◽  
Food Habits ◽  
Psychological Disorder ◽  
Serotonin Synthesis ◽  
Amino Acid Tryptophan ◽  
Pass Through ◽  
Three Factor

Abstract. Emotion-related impulsivity, defined as the tendency to say or do things that one later regret during periods of heightened emotion, has been tied to a broad range of psychopathologies. Previous work has suggested that emotion-related impulsivity is tied to an impaired function of the serotonergic system. Central serotonin synthesis relies on the intake of the essential amino acid, tryptophan and its ability to pass through the blood brain barrier. Objective: The aim of this study was to determine the association between emotion-related impulsivity and tryptophan intake. Methods: Undergraduate participants (N = 25, 16 women, 9 men) completed a self-rated measure of impulsivity (Three Factor Impulsivity Index, TFI) and daily logs of their food intake and exercise. These data were coded using the software NutriNote to evaluate intakes of tryptophan, large neutral amino acids, vitamins B6/B12, and exercise. Results: Correlational analyses indicated that higher tryptophan intake was associated with significantly lower scores on two out of three subscales of the TFI, Pervasive Influence of Feelings scores r =  –.502, p < . 010, and (lack-of) Follow-Through scores, r =  –.407, p < . 050. Conclusion: Findings provide further evidence that emotion-related impulsivity is correlated to serotonergic indices, even when considering only food habits. It also suggests the need for more research on whether tryptophan supplements might be beneficial for impulsive persons suffering from a psychological disorder.

Purification of Antihemophilic Factor (Factor VIII) by Amino Acid Precipitation*

1964 ◽  
Vol 11 (01) ◽  
pp. 064-074 ◽  
Author(s):  
Robert H Wagner ◽  
William D McLester ◽  
Marion Smith ◽  
K. M Brinkhous
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Factor Viii ◽  
Plasma Protein ◽  
Acid Precipitation ◽  
Aminobutyric Acid ◽  
Gamma Aminobutyric Acid ◽  
Specific Procedure ◽  
Beta Alanine ◽  
Antihemophilic Factor

Summary1. The use of several amino acids, glycine, alpha-aminobutyric acid, alanine, beta-alanine, and gamma-aminobutyric acid, as plasma protein precipitants is described.2. A specific procedure is detailed for the preparation of canine antihemophilic factor (AHF, Factor VIII) in which glycine, beta-alanine, and gammaaminobutyric acid serve as the protein precipitants.3. Preliminary results are reported for the precipitation of bovine and human AHF with amino acids.

Complete Covalent Structure of Human Platelet Factor 4

1979 ◽  
Vol 42 (05) ◽  
pp. 1652-1660 ◽  
Author(s):  
Francis J Morgan ◽  
Geoffrey S Begg ◽  
Colin N Chesterman
Keyword(s):  
Amino Acids ◽  
Molecular Weight ◽  
Amino Acid ◽  
Amino Acid Sequence ◽  
Human Platelet ◽  
Platelet Factor 4 ◽  
Platelet Factor ◽  
Disulphide Bonds ◽  
Covalent Structure

SummaryThe amino acid sequence of the subunit of human platelet factor 4 has been determined. Human platelet factor 4 consists of identical subunits containing 70 amino acids, each with a molecular weight of 7,756. The molecule contains no methionine, phenylalanine or tryptophan. The proposed amino acid sequence of PF4 is: Glu-Ala-Glu-Glu-Asp-Gly-Asp-Leu-Gln-Cys-Leu-Cys-Val-Lys-Thr-Thr-Ser- Gln-Val-Arg-Pro-Arg-His-Ile-Thr-Ser-Leu-Glu-Val-Ile-Lys-Ala-Gly-Pro-His-Cys-Pro-Thr-Ala-Gin- Leu-Ile-Ala-Thr-Leu-Lys-Asn-Gly-Arg-Lys-Ile-Cys-Leu-Asp-Leu-Gln-Ala-Pro-Leu-Tyr-Lys-Lys- Ile-Ile-Lys-Lys-Leu-Leu-Glu-Ser. From consideration of the homology with p-thromboglobulin, disulphide bonds between residues 10 and 36 and between residues 12 and 52 can be inferred.

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