scholarly journals Improving the Dietary Protein Quality by Amino Acid Fortification with a High Inclusion Level of Micro Algae (<i>Spirulina platensis</i>) or Insect Meal (<i>Hermetia illucens</i>) in Meat Type Chicken Diets

2018 ◽  
Vol 08 (01) ◽  
pp. 12-26 ◽  
Author(s):  
Carmen Neumann ◽  
Susanne Velten ◽  
Frank Liebert
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Spirulina Platensis ◽  
Protein Quality ◽  
Hermetia Illucens ◽  
Inclusion Level ◽  
Meat Type

scholarly journals Effects of 50 Percent Substitution of Soybean Meal by Alternative Proteins from <i>Hermetia illucens</i> or Spirulina platensis in Meat-Type Chicken Diets with Graded Amino Acid Supply

2018 ◽  
Vol 08 (02) ◽  
pp. 119-136 ◽  
Author(s):  
Susanne Velten ◽  
Carmen Neumann ◽  
Martina Bleyer ◽  
Eva Gruber-Dujardin ◽  
Maria Hanuszewska ◽  
...  
Keyword(s):  
Amino Acid ◽  
Soybean Meal ◽  
Spirulina Platensis ◽  
Hermetia Illucens ◽  
Meat Type

scholarly journals Protein quality in experimental diets and amino acid digestibility

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 28-29
Author(s):  
Chan Sol Park ◽  
Olayiwola Adeola
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Protein Quality ◽  
Sole Source ◽  
Growing Pigs ◽  
Ileal Digestibility ◽  
Distillers Dried Grains ◽  
Low Protein ◽  
Dietary Casein ◽  
Dietary Treatments

Abstract Digestibility of AA in feed ingredients for pigs has been generally determined by feeding semipurified diets containing test ingredients as a sole source of nitrogen. However, malnutrition caused by feeding semi-purified diets may affect the digestibility of AA. Therefore, the hypothesis of this study was that the standardized ileal digestibility (SID) of AA in distillers’ dried grains with solubles (DDGS) are not affected by the addition of casein in experimental diets. In Exp. 1, 20 growing pigs were allotted to dietary treatments including 2 diets containing either 480 g/kg DDGS or 308 g/kg DDGS and 60 g/kg casein. The SID of Lys and Phe for DDGS in the diet containing casein were greater (P < 0.05) than those without casein. Exp. 2 was conducted with 20 growing pigs assigned to dietary treatments containing 0, 55, 110, or 165 g/kg casein while the concentration of DDGS decreased at 466.8, 311.2, 155.6, or 0 g/kg. The SID of most indispensable AA in DDGS linearly (P < 0.05) decreased with increasing concentration of casein. Experiment 3 was conducted to verify that the results of Exp. 1 were affected by the addition of casein or by the concentration of DDGS or both. Twenty growing pigs were assigned to dietary treatments prepared as a 2 × 2 factorial arrangement with the concentration of DDGS at 466.8 or 155.6 g/kg and casein at 0 or 110 g/kg. The SID of most indispensable AA in DDGS at 466.8 g/kg were greater (P < 0.01) than in DDGS at 155.6 g/kg regardless of dietary casein. Overall, the addition of 60 g/kg casein to experimental diets may increase the SID of AA in low-protein quality ingredients but the addition of higher concentration of casein and low concentration of dietary protein from test ingredients may decrease the SID of AA.

scholarly journals A Comparison of Dietary Protein Digestibility, Based on DIAAS Scoring, in Vegetarian and Non-Vegetarian Athletes

Nutrients ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 3016 ◽  
Author(s):  
Corinne Ciuris ◽  
Heidi M. Lynch ◽  
Christopher Wharton ◽  
Carol S. Johnston
Keyword(s):  
Amino Acid ◽  
G Protein ◽  
Lean Body Mass ◽  
Body Mass ◽  
Dietary Protein ◽  
Protein Quality ◽  
Peak Torque ◽  
Diet Group ◽  
Leg Extension ◽  
Vegetarian Diets

Vegetarian diets provide an abundance of nutrients when carefully planned. However, vegetarian diets may have lower protein quality compared to omnivorous diets, a reflection of less favorable amino acid profiles and bioavailability. Hence, the current recommended dietary allowance for protein may not be adequate for some vegetarian populations. The purpose of this study was to determine dietary protein quality using the DIAAS (Digestible Indispensable Amino Acid Score) method in vegetarian and omnivore endurance athletes. DIAAS scores reflect the true ileal digestibility of the indispensable amino acids that are present in food items, and these scores can be used to compute the available protein in diet plans. Thirty-eight omnivores and 22 vegetarians submitted seven-day food records that were analyzed for nutrient content, and DIAAS scores were computed by diet group. Average available protein (g) was compared along with participants’ lean body mass and strength (quantified using the peak torque of leg extension). DIAAS scores and available protein were higher for omnivorous versus vegetarian athletes (+11% and +43%, respectively, p < 0.05). Omnivorous participants had significantly higher lean body mass than vegetarian participants (+14%), and significant correlations existed between available protein and strength (r = 0.314) and available protein and lean body mass (r = 0.541). Based upon available protein, as determined through the DIAAS, vegetarian athletes in this study would need to consume, on average, an additional 10 g protein daily to reach the recommended intake for protein (1.2 g/kg/d). An additional 22 g protein daily would be needed to achieve an intake of 1.4 g/kg/d, the upper end of the recommended intake range.

scholarly journals Amino acid quality modifies the quantitative availability of protein for reproduction in Drosophila melanogaster

2020 ◽  
Author(s):  
Carolyn Ma ◽  
Christen K. Mirth ◽  
Matthew D. Hall ◽  
Matthew D.W. Piper
Keyword(s):  
Drosophila Melanogaster ◽  
Amino Acid ◽  
Dietary Protein ◽  
Egg Production ◽  
Protein Quality ◽  
Female Reproduction ◽  
Dietary Amino Acid ◽  
Physiological Outcomes ◽  
Meta Analyses ◽  
Length Of Life

AbstractDiet composition, especially the relative abundance of key macronutrients, is well known to affect animal wellbeing by changing reproductive output, metabolism and length of life. However, less attention has been paid to the ways the quality of these nutrients modify these macronutrient interactions. Nutritional Geometry can be used to model the effects of multiple dietary components on life-history traits and to compare these responses when diet quality is varied. Previous studies have shown that dietary protein quality can be increased for egg production in Drosophila melanogaster by matching the dietary amino acid proportions to the balance of amino acids used by the sum of proteins in the fly’s in silico translated exome. Here, we show that dietary protein quality dramatically alters the effect of protein quantity on female reproduction across a broad range of diets varying in both protein and carbohydrate concentrations. These data show that when sources of ingredients vary, their relative value to the consumer can vastly differ and yield very different physiological outcomes. Such variations could be particularly important for meta analyses that look to draw generalisable conclusions from diverse studies.

scholarly journals Bioavailable Methionine Assessed Using the Indicator Amino Acid Oxidation Method Is Greater When Cooked Chickpeas and Steamed Rice Are Combined in Healthy Young Men

2020 ◽  
Vol 150 (7) ◽  
pp. 1834-1844 ◽  
Author(s):  
Mahroukh Rafii ◽  
Paul B Pencharz ◽  
Ronald O Ball ◽  
Christopher Tomlinson ◽  
Rajavel Elango ◽  
...  
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Protein Quality ◽  
Young Men ◽  
Ratio Method ◽  
Acid Mixture ◽  
Acid Oxidation ◽  
Amino Acid Oxidation ◽  
Repeated Measures Design ◽  
Pulse Protein

ABSTRACT Background In general, pulse protein is limiting in the indispensable amino acid methionine, and antinutritional factors in pulses can affect methionine bioavailability. Complementation with grains such as rice can improve pulse protein quality, but knowledge of methionine bioavailability in pulses and grains is necessary to correct for available methionine when planning and assessing dietary protein intake. Objectives The study objectives were to determine the bioavailability of methionine in rice and chickpeas separately and to assess the effect of complementation of chickpeas and rice. Methods Eleven healthy young men (&lt;30 y, BMI &lt;25 kg/m2) were studied in a repeated-measures design using the indicator amino acid oxidation (IAAO) method, with l-[1-13C]phenylalanine as the indicator. Each received 7 or 10 methionine intakes in random order: 4 intakes of l-methionine—0.5, 1, 2, and 3 mg⋅kg−1⋅d−1 (reference diet); 3 intakes of methionine from rice and from chickpeas; and 3 intakes from the mixed meal of chickpeas plus rice (test diets). The bioavailability of methionine and the effect of complementation were assessed by comparing the IAAO response to varying intakes of methionine in rice, in cooked Canadian chickpeas, and in rice plus chickpeas combined compared with the IAAO response to l-methionine intakes in the reference protein (crystalline amino acid mixture patterned after egg protein) using the slope ratio method. Results The bioavailability of methionine from rice and from chickpeas was 100% and 63%, respectively. Complementation of cooked chickpeas with rice decreased the oxidation of l-[1-13C]phenylalanine by up to 14% (P &lt; 0.05), suggesting an improved protein quality of the combined chickpeas plus rice protein. Conclusions When chickpeas are the main protein source in the diet of young adult men, the combination of rice and chickpeas in a 3:1 ratio is recommended to improve dietary protein quality. This trial was registered at clinicaltrials.gov as NCT03339154 and NCT03674736.

scholarly journals Dietary protein quality and malnutrition in Africa

2012 ◽  
Vol 108 (S2) ◽  
pp. S69-S76 ◽  
Author(s):  
Hettie Carina Schönfeldt ◽  
Nicolette Gibson Hall
Keyword(s):  
Developing Countries ◽  
Body Weight ◽  
Amino Acid ◽  
Low Income ◽  
Dietary Protein ◽  
Protein Quality ◽  
Amino Acid Content ◽  
Food Sources ◽  
Dietary Energy ◽  
Persistent Problem

The WHO (2007) Technical Report on protein and amino acid requirements in human nutrition states that the best estimate for a population average requirement is 105 mg nitrogen/kg body weight per day, or 0·66 g protein/kg body weight per day. In many developing countries protein intake falls significantly short of these values. Apart from protein quantity, protein quality including bioavailability and digestibility, from different food sources, are currently on the global agenda. The 1st International Symposium on Dietary Protein for Human Health held in Auckland, in March 2011, and the consecutive Food and Agricultural Organization of the United Nations (FAO) Expert Consultation on Dietary Protein Quality, both highlighted the importance of assessing the quality of protein from different food sources through determination of amino acid content. Throughout the developed world, animal products and cereals are the two most important sources of protein; in developing countries this order is reversed. In low income countries only 3 % of total dietary energy, as an indicator of diet composition, is derived from meat and offal, 11 % from roots and tubers and 6 % from pulses, nuts and oilseeds. The remainder of the dietary energy is mainly derived from cereal-based staple food. Although the production of livestock has increased in developing countries, the consumption of protein in these countries with people consuming the most limited amounts of protein are continually decreasing. Undernutrition, including insufficient consumption of protein, remains a persistent problem in the developing world, and although many diets within these developing countries are deficient in thequantityof protein compared to recommendations, thequalityof the protein also strongly comes into focus.

Potential of black soldier fly (Hermetia illucens) as alternative protein source in salmonid feeds - A review

2020 ◽  
Vol 67 (4) ◽  
Author(s):  
Tudor Papuc ◽  
Anca Boaru ◽  
Daniela Ladosi ◽  
Danut Struti ◽  
Bogdan Georgescu
Keyword(s):  
Amino Acid ◽  
Chemical Composition ◽  
Soybean Meal ◽  
Protein Quality ◽  
Protein A ◽  
Cost Effective ◽  
Amino Acid Profile ◽  
Black Soldier Fly ◽  
Hermetia Illucens ◽  
Biological Value

The current constant pressure on fishmeal production for aquaculture feeds stresses the need to search for alternative sources of protein. A possible protein ingredient is insect meal, being more cost effective than fishmeal and soybean meal. Black soldier fly (Hermetia illucens) larvae meal is used in many studies with positive results regarding the bioproductive performances of salmonids. The balanced amino acid profile is comparable with the one of soybean meal. The crude protein and amino acid digestibility is high and similar to that of fishmeal. For rainbow trout (Oncorhynchus mykiss), the protein biological value of the larvae is qualitatively lower than that of fishmeal. Atlantic salmon fed with experimental diets with larvae meal showed high bioproductive performances and a better protein biological value compared with salmon fed with a standard fishmeal diet. However, the nutritional quality and chemical composition of the larvae can be drastically improved through the feeding media, which make it a very interesting candidate as a substitute for fishmeal. The aim of this review is to present the current stage of H. illucens use in salmonid feeds, detailing the chemical composition and protein quality. Furthermore, the effect of larvae meal based diets on salmonids is presented.

scholarly journals Disclosing the Nutritional Quality Diversity of Portuguese Common Beans—The Missing Link for Their Effective Use in Protein Quality Breeding Programs

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 221
Author(s):  
Elsa Mecha ◽  
Sofia Natalello ◽  
Bruna Carbas ◽  
Andreia Bento da Silva ◽  
Susana T. Leitão ◽  
...  
Keyword(s):  
Heat Stress ◽  
Amino Acid ◽  
Nutritional Quality ◽  
Dietary Habits ◽  
Protein Quality ◽  
Trypsin Inhibitor Activity ◽  
Environment Interaction ◽  
Individual Amino Acid ◽  
Common Beans ◽  
Breeding Programs

The common bean (Phaseolus vulgaris L.) represents a sustainable and affordable source of protein, namely, to populations with vegetarian dietary habits. Despite the national germplasm genetic diversity, little is known about the Portuguese accessions’ nutritional and protein quality, leading to their underuse in breeding programs. To fill this gap, a representative collection (106 accessions) was cropped under two contrasting environments (traditional versus heat stress) and evaluated in terms of nutritional quality by near-infrared spectroscopy. Protein quality was assessed, under the stressful environment, considering the individual amino acid contents and the activity of trypsin inhibitors through mass spectrometry (LC-MS/MS) and spectrophotometry, respectively. On top of strong genotypic control, the nutritional composition (protein, fat, fiber, moisture and ash) was also highly influenced by the environment and by genotype × environment interaction, with a clear nutritional quality ranking change for the accessions in heat stress conditions. Classified into three clusters, the accessions from the cluster with the highest individual amino acid and protein contents also showed higher trypsin inhibitor activity (TIA). Since different levels of TIA had no translation into contrasting protein digestibility, breeders focusing on common beans’ protein quality improvement, especially under challenging warming climate conditions, may take advantage of this group of accessions.

Sign in / Sign up

Export Citation Format

Share Document