scholarly journals Specification of the Impact of Socioeconomic Factors on Consumption of the Animal and Vegetable Sources of Protein

1975 ◽  
Vol 7 (2) ◽  
pp. 141-147
Author(s):  
John Adrian ◽  
Raymond Daniel

Proteins are one of the basic and essential nutrients consumed by man. Both animal and vegetable sources provide proteins in the human diet. Many proteins derived from animal sources are nutritionally adequate because all essential amino acids are present. However, proteins from vegetable sources are often deficient in one or more essential amino acids. Therefore, vegetable protein must generally be supplemented with other proteins in order to provide good nutition. However, vegetable proteins can provide a satisfactory diet if the individual is judicious in selecting foods.A study of 1955 data indicated that approximately 55 percent of the protein component of the American diet came from animal sources. A recent analysis indicated that red meats contributed approximately 30 percent of the animal source to total protein. Dairy products, poultry, and fish contributed the balance. Similarly, wheat flour provided approximately 15 percent of total vegetable protein intake with other cereals (rice, corn, barley and rye), legume seeds (beans, peas and soybeans), and nuts constituting the balance.

1996 ◽  
Vol 75 (5) ◽  
pp. 683-698 ◽  
Author(s):  
Feng Yu ◽  
P. J. Moughan ◽  
T. N. Barry

The effect of adding cottonseed hulls to casein- and cottonseed-kernel-based diets on the apparent and true ileal digestibility of N and amino acids, and the proportion of this effect accounted for by condensed tannin (CT), were determined using the growing rat. Sixtyrats were allocated randomly to ten semi- purified diets, containing either casein (four diets) or purified unheated solvent-extracted cottonseed kernel (six diets) as the sole protein source, with Cr2O3 added as an indigestible marker. Two of the casein diets contained no hulls whilst the remaining two diets contained 70 g cottonseed hulls/kg. Two of the cottonseed-kernel-based diets contained no hulls, with two containing 23 g hulls/kg and the remaining two containing 46 g hulls/kg. For each pair of diets, PEG was either included or excluded. The effect of CT was quantified by comparing control rats (-PEG; CTacting) with PEG-supplemented rats (+PEG; CT inactivated) at each level of dietary hulls. The rats were given their respective experimental diets for 14 d. Each rat was given the food ad libitumfor 10 min hourly from 08·00 to 18·00 hours. On day 14, samples of digesta were collected at death from the terminal 150 mm of ileum at 7 h from the first meal. Apparent and true ileal digestibilities were calculated for DM, N and the individual amino acids. The principal finding was that the inclusion of hulls depressed the apparent and true ileal digestibilities of N and amino acids, but with the response differing between diets. With the casein-based diet the mean apparent and true ileal amino acid digestibilities were significantly depressed from 0·89 and 0·96 to 0·85 and 0·92 respectively, by the inclusion of 70 g hulls/kg in the diet, and addition of PEG then restored these to 0·89 and 0·95. All of the depression could be explained by the CT content of the hulls. However, with the cottonseed-kernel-based diet the responses fell into three categories. The apparent and true ileal digestibilities of the essential amino acids cystine and methionine were not affected by hull addition, ileal digestibilities of leucine, isoleucine, lysine, threonine and valine were markedly depressed by hull addition with approximately 50% of the depression being explained by CT, whilst the ileal digestibilities of histidine, arginine and phenylalanine were depressed by hull addition but little or none of this effect could be explained by CT. Thus the effect of hulls on protein digestion clearly differed with source of protein. With the cottonseed-kernel-based diet it seems that components of the hulls other than CT also depressed the apparent and true ileal digestibilities of N and amino acids. The identity of these components is unknown.


Author(s):  
V. I. Sichkar

Goal. Based on the results to substantiate the need for a significant increase in legume crops in Ukraine on the basis of analysis of food and feed indicators of their seeds, the impact on soil quality and the environment. Material and methods. Field – determination of features of growth and development of plants, elements of seed productivity; biometric and measuring-weight – accounting of yield and total biomass; biochemical – determination of protein, fat and other components of seeds; statistical – variation, regression and analysis of variance. Results and discussion. The significant nutritional value of legume seeds, which is rich in high-quality protein with a high content of essential amino acids, isoflavones, essential micronutrients, is substantiated. It is distinguished by high taste, quickly swells and boils, has a pleasant aroma. This group of crops is able to fix nitrogen from the air, provide for their own needs and leave a significant amount of it in the soil for subsequent crop rotations. Legumes should be considered in the crop rotation system together with winter wheat as fallow crops. Their synergistic effect on subsequent crop rotations is explained by the peculiarity of the microflora of the root zone, where symbiotic and free-living bacteria are concentrated. Observations indicate the need to increase crops of pea, chickpea and lentil in Ukraine, as there are all the necessary conditions - adapted to insufficient moisture varieties, developed technology for their cultivation, accumulated positive experience for obtaining high yields. Conclusions. Based on our own results and analysis of the experience of many countries around the world revealed the importance of legumes for our country. Their role in providing high-quality food, improving soil quality, increasing the country’s export potential is noted


This paper presents the method of preparation of fish pate from pike or bream and additionally comprising pumpkin, vegetable oil, seaweed. Detailed fish pate production scheme is described. The developed fish pate has good sensory properties with high nutritional value. The protein content varied from 17.1 to 18.0% with high presence of essential amino acids, such as valine 97.5 mg/100g, isoleucine 93.8 mg/100g, threonine 79.1 mg/100g and tryptophan 18.4 mg/100g. Scientifically grounded fish pate formulation and production technology can lead to enrich human diet with healthy nutrients and improve human well-being and health conditions.


Author(s):  
Rajni Kamboj ◽  
Vikas Nanda

Legumes consumption is a usual and beneficial part of the human diet and contributing to health. Moreover, it is presently taking place a re-evaluation for its useful effects of consumption in the diet, which is the basis for various health claims. They are essential source of protein, carbohydrates, dietary fibre, micronutrients and various phytochemicals. Legumes have appreciable quantity of all the essential amino acids excluding sulphur containing amino acids, which can be balanced to combine with cereals in daily intake. Starch is the major stored carbohydrate followed by dietary fibre, simple sugars and oligosaccharides. Calcium, magnesium, potassium, phosphorus and iron are also present in legume seeds. Bioavailability of nutrients can be increased by soaking, sprouting and fermentation. Consumption of legumes reduces the risk of cardiovascular disease, some cancers (colon, breast and prostate) and also helps to manage body weight due to its satiety value. FAO has chosen 2016 as the International Year of Pulses which will emphasize the health and environmental benefits of pulses. Nutritional composition, anti-nutritional factors and health benefits of legumes are summarised in the current review. 


2015 ◽  
Vol 309 (5) ◽  
pp. E450-E457 ◽  
Author(s):  
W. Kyle Mitchell ◽  
Bethan E. Phillips ◽  
John P. Williams ◽  
Debbie Rankin ◽  
Jonathan N. Lund ◽  
...  

Essential amino acids (EAA) are responsible for skeletal muscle anabolic effects after nutrient intake. The pattern of appearance of EAA in blood, e.g., after intake of “slow” or “fast” protein sources or in response to grazing vs. bolus feeding patterns, may impact anabolism. However, the influence of this on muscle anabolism is poorly understood, particularly in older individuals. We determined the effects of divergent feeding profiles of EAA on blood flow, anabolic signaling, and muscle protein synthesis (MPS) in older men. Sixteen men (∼70 yr) consumed EAA either as a single dose (bolus, 15 g; n = 8) or as small repeated fractions (pulse, 4 × 3.75 g every 45 min; n = 8) during 13C6 phenylalanine infusion. Repeated blood samples and muscle biopsies permitted measurement of fasting and postprandial plasma EAA, insulin, anabolic signaling, and MPS. Muscle blood flow was assessed by contrast-enhanced ultrasound (Sonovue). Bolus achieved rapid insulinemia (12.7 μiU/ml 25-min postfeed), essential aminoacidemia (∼3,000 μM, 45–65 min postfeed), and mTORC1 activity; pulse achieved attenuated insulin responses, gradual low-amplitude aminoacidemia (∼1,800 μM 80–195 min after feeding), and undetectable mTORC1 signaling. Despite this, equivalent anabolic responses were observed: fasting FSRs of 0.051 and 0.047%/h (bolus and pulse, respectively) increased to 0.084 and 0.073%/h, respectively. Moreover, pulse led to sustainment of MPS beyond 180 min, when bolus MPS had returned to basal rates. We detected no benefit of rapid aminoacidemia in this older population despite enhanced anabolic signaling and greater overall EAA exposure. Rather, apparent delayed onset of the “muscle-full” effect permitted identical MPS following low-amplitude-sustained EAA exposure.


2005 ◽  
Vol 81 (1) ◽  
pp. 141-148 ◽  
Author(s):  
S. G. Vhile ◽  
A. Skrede ◽  
Ø. AhlstrØm ◽  
K. Hove

AbstractMajor nutrient and amino acid digestibilities were evaluated in experiments with dogs (Canis familiaris), blue foxes (Alopex lagopus) and mink (Mustela vison) using seven extruded diets containing different protein sources. Four dogs (German shepherd), four blue foxes and four mink were offered each of the experimental diets to determine apparent total tract digestibility. Average digestibility of crude protein (CP) in blue foxes and mink was similar, and lower than the corresponding value in dogs (0·834 and 0·831 v. 0·864) (P < 0·001). CP digestibility in blue foxes showed significant correlations with dogs and mink (P < 0·05), while no significant correlation was observed between dogs and mink. Average digestibility of most amino acids was significantly lower in blue foxes than in dogs (P < 0·001), whereas mink digested most essential amino acids at the same level as did dogs. Most non-essential amino acids were digested at a significantly lower rate in the mink than in the dog and the blue fox (P < 0·001). There were significant correlations in the digestibility of most amino acids between dogs and blue foxes, and between blue foxes and mink (P < 0·05). Correlations were significant between dogs and mink for the digestibility of most essential amino acids (P < 0·05) but not significant (P > 0·05) for several non-essential amino acids. Average digestibility of crude fat was high and similar among the species studied: 0·968, 0·967 and 0·959 in dogs, blue foxes and mink, respectively. Average digestibility of starch ranged from 0·971 in mink to 0·998 in dogs; significantly higher in dogs than in blue foxes and mink, and significantly higher in blue foxes than in mink (P < 0·001). It was concluded that digestibility determined with mink, blue foxes or dogs may be used to predict digestibilities in the other investigated species. However, both the characteristics of the protein sources as well as the individual amino acid studied will influence the difference in digestibility among the species.


2020 ◽  
Vol 23 ◽  
pp. 03001
Author(s):  
Irina A. Sazonova ◽  
Tatyana S. Osina ◽  
Petr V. Smutnev ◽  
Elena G. Zhnichkova ◽  
Sergey V. Shpul

This article describes studies on the impact of effective microorganisms of the “Baikal EM-1” probiotic on the biotransformation of flaxseed meal, its organoleptic and chemical parameters, and changes in amino acid and fatty acid compositions. It has been established that after fermentation in flaxseed meal, the amount of fiber decreases, it saturates with protein, and the amount of essential and non-essential amino acids increases. We made an analysis of the feed value of biotransformed meal depending on the probiotic concentration for the purpose of further use in the feeding of carps – the most effective probiotic concentration for biotransformation was selected. The effect of replacing part of the feed with biotransformed flaxseed meal on the change in liveweight and biochemical parameters of fish blood was studied. Positive dynamics of fishes’ liveweight was noted. The inexpediency of feeding unfermented meal to carps is proved.


Author(s):  
Giovanni Corsetti ◽  
Evasio Pasini ◽  
Claudia Romano ◽  
Riccardo Calvani ◽  
Anna Picca ◽  
...  

Inadequate protein intake can impair protein balance and lead to skeletal muscle atrophy, impaired body growth, and functional decline. Foods provide both non-essential (NEAAs) and essential amino acids (EAAs) that may convey different metabolic stimuli to specific organs and tissues. In this study, we sought to evaluate the impact of six diets with various EAA/NEAA blends on body composition and the risk of developing tissue wasting in late middle-aged male mice. Mice consuming NEAA-based diets, although showing increased food and calorie intake, suffered the most severe weight loss. Interestingly, even moderate NEAAs prevalence was able to induce inflammatory catabolic stimuli, generalized body wasting and systemic metabolic alterations. Complete depletion of retroperitoneal white adipose tissue and a severe loss (&gt;75%) of brown adipose tissue were observed together with muscle wasting. Conversely, EAA-based diets induced significant decreases in weight by reducing primarily fat reserves, but improved clinical parameters. Tissue wasting was caused by altered AA quality, independent of reduced nitrogen or caloric intake. Our results indicate that an optimized balance of AA composition is necessary for preserving overall bodily energy status. These findings are particularly relevant in the context of aging and may be exploited for contrasting its negative correlates including body wasting.


BMC Biology ◽  
2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Nicolas Parisot ◽  
Carlos Vargas-Chávez ◽  
Clément Goubert ◽  
Patrice Baa-Puyoulet ◽  
Séverine Balmand ◽  
...  

Abstract Background The rice weevil Sitophilus oryzae is one of the most important agricultural pests, causing extensive damage to cereal in fields and to stored grains. S. oryzae has an intracellular symbiotic relationship (endosymbiosis) with the Gram-negative bacterium Sodalis pierantonius and is a valuable model to decipher host-symbiont molecular interactions. Results We sequenced the Sitophilus oryzae genome using a combination of short and long reads to produce the best assembly for a Curculionidae species to date. We show that S. oryzae has undergone successive bursts of transposable element (TE) amplification, representing 72% of the genome. In addition, we show that many TE families are transcriptionally active, and changes in their expression are associated with insect endosymbiotic state. S. oryzae has undergone a high gene expansion rate, when compared to other beetles. Reconstruction of host-symbiont metabolic networks revealed that, despite its recent association with cereal weevils (30 kyear), S. pierantonius relies on the host for several amino acids and nucleotides to survive and to produce vitamins and essential amino acids required for insect development and cuticle biosynthesis. Conclusions Here we present the genome of an agricultural pest beetle, which may act as a foundation for pest control. In addition, S. oryzae may be a useful model for endosymbiosis, and studying TE evolution and regulation, along with the impact of TEs on eukaryotic genomes.


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