Amino acids in bee-collected pollens from Australian indigenous and exotic plants

1985 ◽  
Vol 25 (3) ◽  
pp. 722 ◽  
Author(s):  
CJ Rayner ◽  
DF Langridge
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
Pinus Radiata ◽  
Crude Protein ◽  
Exotic Plants ◽  
Crude Protein Content ◽  
Low Protein ◽  
Limiting Amino Acid ◽  
Amino Acid Contents

The protein and amino acid contents of bee-collected pollens from 10 indigenous and 16 exotic Australian plants were determined. Crude protein content showed a large variation with a range from 9.5% for Pinus radiata pollen, to 36.9% for Banksia ornata pollen. Pollens which were found to have high protein contents are those which are also highly favoured by apiarists whereas those with low protein content are considered to be nutritionally inferior pollens. The amino acid pattern for pollens from both indigenous and exotic plants indicated that, generally, the levels of amino acids in the pollens were above the bees' requirements. Tryptophan appeared to be the first limiting amino acid in Australian pollens for honeybees.

scholarly journals Amino Acid Compositions of 27 Food Fishes and Their Importance in Clinical Nutrition

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Bimal Mohanty ◽  
Arabinda Mahanty ◽  
Satabdi Ganguly ◽  
T. V. Sankar ◽  
Kajal Chakraborty ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
High Performance ◽  
Crude Protein ◽  
Cold Water ◽  
Building Blocks ◽  
Crude Protein Content ◽  
Dietary Counseling ◽  
Amino Acid Compositions

Proteins and amino acids are important biomolecules which regulate key metabolic pathways and serve as precursors for synthesis of biologically important substances; moreover, amino acids are building blocks of proteins. Fish is an important dietary source of quality animal proteins and amino acids and play important role in human nutrition. In the present investigation, crude protein content and amino acid compositions of important food fishes from different habitats have been studied. Crude protein content was determined by Kjeldahl method and amino acid composition was analyzed by high performance liquid chromatography and information on 27 food fishes was generated. The analysis showed that the cold water species are rich in lysine and aspartic acid, marine fishes in leucine, small indigenous fishes in histidine, and the carps and catfishes in glutamic acid and glycine. The enriched nutrition knowledge base would enhance the utility of fish as a source of quality animal proteins and amino acids and aid in their inclusion in dietary counseling and patient guidance for specific nutritional needs.

scholarly journals Connection of protein and amino acid content of forage and medium quality winter wheat varieties

2009 ◽  
pp. 101-107
Author(s):  
Zoltán Mezei ◽  
Ágnes Pongrácznl Barancsi ◽  
Péter Sipos ◽  
Zoltán Győri ◽  
János Csapó
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
Acid Content ◽  
Crude Protein ◽  
Amino Acid Content ◽  
Essential Amino Acids ◽  
Crude Protein Content ◽  
Wheat Varieties ◽  
Winter Wheat Varieties

We analysed the crude protein content, amino acid content, amino acid composition of four forage and milling III. quality winter wheat varieties (Magor, Hunor, Róna and Kondor) from their samples from five following years (2003, 2004, 2005, 2006, 2007). We found that quantity of essential and non-essential amino acids rose with increase in crude protein content. On examination of protein amino acid composition in relation to crude protein content we found that the crude protein content increased the quantities of the non-essential amino acids also rose, while those of the essential amino acids decreased as the lysine, the limiting amino acid of wheat. We also established that, as crude protein content increased, the biological value of the protein decreased.

scholarly journals Connection of crude protein content and amino acid content of forage and medium quality winter wheat varieties in the relation of quantity and quality

2008 ◽  
pp. 73-79
Author(s):  
Zoltán Mezei ◽  
Zoltán Győri ◽  
János Csapó
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
Acid Content ◽  
Crude Protein ◽  
Amino Acid Content ◽  
Essential Amino Acids ◽  
Crude Protein Content ◽  
Wheat Varieties ◽  
Winter Wheat Varieties

We analysed the crude protein content, amino acid content, amino acid composition of four forage and milling III. quality winter wheat varieties (Magor, Hunor, Róna and Kondor) from their samples from five following years (2003, 2004, 2005, 2006, 2007). We found that quantity of essential and non-essential amino acids rose with increase in crude protein content. On examination of protein amino acid composition in relation to crude protein content we found that the crude protein content increased the quantities of the non-essential amino acids also rose, while those of the essential amino acids decreased as the lysine, the limiting amino acid of wheat. We also established that, as crude protein content increased, the biological value of the protein decreased.

scholarly journals Reduction of the crude protein content of diets supplemented with essential amino acids for piglets weighing 15 to 30 kilograms

2014 ◽  
Vol 43 (6) ◽  
pp. 301-309 ◽  
Author(s):  
Juliana Beatriz Toledo ◽  
Antonio Claudio Furlan ◽  
Paulo Cesar Pozza ◽  
Jocasta Carraro ◽  
Gabriel Moresco ◽  
...  
Keyword(s):  
Amino Acids ◽  
Protein Content ◽  
Crude Protein ◽  
Essential Amino Acids ◽  
Crude Protein Content

scholarly journals Performance of Broilers Fed Low Protein Diets with Lysine and Methionine Supplements

2006 ◽  
Vol 6 (1) ◽  
pp. 47-59
Author(s):  
Nancy Montilla ◽  
◽  
Lolito Bestil ◽  
Sulpecio Bantugan ◽  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
High Protein Diet ◽  
Protein Diet ◽  
Amino Acid Supplementation ◽  
Feed Conversion ◽  
Broiler Performance ◽  
Acid Supplementation ◽  
Low Protein

A feeding trial with broilers was conducted to evaluate the effects of amino acids (lysine and methionine) supplementation of diets low in protein content on the voluntary intake, feed conversion efficiency, broiler performance, and cost and return of broiler production. Results showed cumulative voluntary feed intake was not significantly affected by lowering the protein content of the diet. Cumulative weight gain of broilers was lower with diet when supplemented iwht lysine and methionine to meet requirements. Birds fed with diets low in protein has less efficient feed converstion, but became comparable with those receiveing diets high in protein when supplemented with amino acids. Feed cost per kilogram broiler produced was not significantly affected by diets used in the study, although the low-protien diet with amino acid supplement had the lowest values. In terms of return above feed and chick cost, broilers fed with high-protein diet had the greatest value, but not significantly different from birds fed with low-protien diet with amino acid supplementation which gave about P10 per bird higher returns than those fed low-protein diet without amino acid supplementation.

CRUDE PROTEIN, AMINO ACID AND ALKALOID CONTENTS OF ANNUAL SWEET LUPIN (LUPINUS SPP. L.) FORAGES AND SEEDS GROWN IN ETHIOPIA

2012 ◽  
Vol 48 (3) ◽  
pp. 414-427 ◽  
Author(s):  
LIKAWENT YEHEYIS ◽  
C. KIJORA ◽  
E. VAN SANTEN ◽  
M. WINK ◽  
JÜRGEN DANIER ◽  
...  
Keyword(s):  
Amino Acid ◽  
Protein Content ◽  
Crude Protein ◽  
Nutritional Value ◽  
Lupinus Albus ◽  
White Lupin ◽  
Crude Protein Content ◽  
Protein Amino Acid ◽  
Livestock Feed ◽  
Alkaloid Contents

SUMMARYThough bitter white lupin (Lupinus albus L.) is a traditional crop in Ethiopia, sweet lupins are new to the country. As a result, the nutritional value of low-alkaloid lupins has not been evaluated under Ethiopian conditions. Crude protein, amino acid and alkaloid contents of 16 cultivars of three annual lupin species grown in four lupin growing locations (Merawi, Finoteselam, Kossober-1 and Kossober-2) of Ethiopia were evaluated. Location × cultivar interaction was a significant source of variation for all traits (p < 0.0001). In all locations, blue entries had either similar (p ≥ 0.0584) or higher (p ≤ 0.0235) forage crude protein content than the Local Landrace, white group and yellow entry. Compared with the Local Landrace, white and blue entries, the sole yellow entry had higher (p ≤ 0.0148) seed crude protein content at all locations except at Kossober-2, where it had similar (p = 0.8460) crude protein content as white entries. The Local Landrace had the highest forage and seed alkaloid contents. However, sweet blue Vitabor and Sanabor entries had the lowest forage and seed alkaloid contents, respectively. Low alkaloid and higher crude protein contents of sweet lupins grown in Ethiopia show the possibility to use sweet lupin forage and seeds as cheap home-grown protein source for livestock feed and human food in the country. However, for more reliable information, the laboratory results need to be verified by animal and human evaluations of the crop.

Comparison of percentages of tissues and nutrients between parents and F3 offspring of Oreochromis aurea×Siniperca chuatsi

2007 ◽  
Vol 4 (2) ◽  
pp. 121-125
Author(s):  
Wang Jin-Long ◽  
Yang Hong ◽  
Wu Ting-Ting
Keyword(s):  
Amino Acid ◽  
Crude Protein ◽  
Crude Protein Content ◽  
Distant Hybridization ◽  
Crude Lipid ◽  
Siniperca Chuatsi ◽  
Flesh Quality ◽  
Amino Acid Contents ◽  
Acid Index

AbstractThis research focused on the effect of distant hybridization to improve the flesh quality of offspring from Oreochromis aurea (♀)×Siniperca chuatsi (♂). The proportions of different tissues and percentages of nutrient components were compared between fish of the F3 generation and O. aurea and S. chuatsi. The results showed that the proportion of flesh in F3 hybrids was significantly lower than that in O. aurea. Crude lipid content was lower and crude protein content significantly higher in the F3 generation. Concentrations of four kinds of amino acids important for flavour (DAA) were higher in the F3 generation than in O. aurea, and the total DAA was significantly higher. Furthermore, the other amino acid contents and essential amino acid index of the F3 generation were intermediate between O. aurea and S. chuatsi. We conclude that some effects of hybridization have induced flesh quality improvement.

Forage quality and use of reforested habitats by snowshoe hares

1988 ◽  
Vol 66 (9) ◽  
pp. 2080-2083 ◽  
Author(s):  
Gordon L. Rogowitz
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Forage Quality ◽  
Crude Protein Content ◽  
Vegetative Cover ◽  
Low Protein ◽  
Snowshoe Hares ◽  
Conifer Plantations ◽  
Browse Species

The forage quality of habitats associated with mature conifer plantations and the use of these habitats by resident snowshoe hares (Lepus americanus) were evaluated. The winter forage of hares was composed of deciduous stems that were predominantly low in protein content and not preferred. The crude protein content of the principal browse species, Viburnum dentatum, was only 4.6–6.4% during winter months. However, snowshoe hares feeding on the low-protein browse maintained their body weight. The intake of protein was maximized by the consumption of stem ends, which compensated for the low-protein forage. Use of habitat by snowshoe hares was closely related to the vegetative cover but did not correlate well with forage availability. Sites preferred by hares had a well-developed overstory (mature spruce) but only sparsely available forage during the winter. Thickets of early-successional deciduous vegetation had high use and contained most of the low-protein browse.

scholarly journals Protein content and amino acids profile in 10 cultivars of ginkgo ( Ginkgo biloba L.) nut from China

2019 ◽  
Vol 6 (3) ◽  
pp. 181571 ◽  
Author(s):  
Mengyi Zhou ◽  
Tongtong Hua ◽  
Xiaofang Ma ◽  
Haijun Sun ◽  
Li Xu
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
Ginkgo Biloba ◽  
Food Industry ◽  
Protein Quality ◽  
Scientific Development ◽  
Traditional Food ◽  
Limiting Amino Acid ◽  
Amino Acids Profile

As a traditional food and medicine source, ginkgo ( Ginkgo biloba L.) nut is popularly consumed in East Asia. The aim of this work is to characterize protein content and amino acids profile in 10 ginkgo nut cultivars, named successively as no. 1 to no. 10. There were observed differences among the cultivars with respect to the contents of protein and amino acids, except Cys. The no. 6 cultivar presented the highest protein content (22.1 g/100 g DW), while the no. 9 had the lowest (16.2 g/100 g DW). The contents of EAA and NEAA were revealed to vary in the range of 14.3–26.2 and 21.4–41.1 g/100 g protein, respectively. The most abundant EAA was Leu, and the first limiting amino acid was Lys. The level of Arg was attractive, especially in the no. 5 cultivar (1741 mg/100 g DW) where it is comparable to hazelnut and pistachio. As confirmed by AAS and EAAI, the no. 5 cultivar presented the best amino acids profile and protein quality among these cultivars. These results have relevance to the scientific development and application of ginkgo nuts in the food industry.

Optimum dietary amino acid pattern and limiting order of some essential amino acids for growing-furring blue foxes (Alopex lagopus)

2004 ◽  
Vol 78 (1) ◽  
pp. 77-86 ◽  
Author(s):  
T. Dahlman ◽  
J. Valaja ◽  
E. Venäläinen ◽  
T. Jalava ◽  
I. Pölönen
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Control Diet ◽  
Essential Amino Acids ◽  
Amino Acid Pattern ◽  
N Retention ◽  
Low Protein ◽  
Acid Control ◽  
Blue Fox ◽  
Limiting Amino Acid

AbstractThe optimum pattern and limiting order of some essential amino acids for growing-furring blue foxes were assessed from nitrogen (N) retention responses. Total tract digestibility and N balance trials were carried out on 24 weaned blue fox males in an 8 ✕ 5 cyclic change-over experiment. Eight experimental diets were prepared by removing proportionately about 0·4 of each of the amino acids studied – methionine + cystine, lysine, threonine, tryptophan and histidine – successively from the amino acid control diet. The main source of protein in the amino acid control diet was casein and an amino acid mixture was added to bring the calculated crude protein (CP) content up to the level of 170 g/kg dry matter (DM). Low-protein (CP 95·7 g/kg DM) and high-protein (CP 166·6 g/kg DM) diets, the protein proportion of which was casein protein, served as negative and positive control diets, respectively. The reduction in N retention when one amino acid in turn was deleted from the amino acid control diet was calculated, and a regression analysis was made between N retention and relative amino acid intake. Data on the animals’ intake of each limiting amino acid and those on the amino acid control diet were used. The optimum amino acid pattern, expressed relative to lysine = 100, proved to be: methionine + cystine 77, threonine 64, histidine 55 and tryptophan 22. The first-limiting amino acids were methionine + cystine. Blue fox responses (N retention, weight gain) to deletion of methionine + cystine from the diet were very severe and exceeded those to deletion of any other amino acid. Moreover, removing methionine + cystine from the diet significantly impaired the apparent digestibility of organic matter, reducing it to a level even lower than that of the low-protein diet. After methionine + cystine, the next-limiting amino acid in casein-based diets was threonine, followed by histidine and tryptophan. The results show the importance of verifying the sufficiency of dietary methionine + cystine in the practical feeding of blue foxes.

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