The Combined Amino Acids in Several Species of Marine Algae

Dg, Smith; Eg, Young

doi:10.1016/s0021-9258(18)65949-6

Cited by 39 publications

(2 citation statements)

References 22 publications

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“…L. digitata is one of the most exploited types of seaweed off the coast of France, where it has been harvested for alginates at around 50,000 tons a year as of 2011 [ 20 ]. These two species (i) have been shown to illicit a positive effect on rumen function, animal health, energy utilization, and milk quality and safety [ 3 , 10 , 13 , 21 , 22 , 23 , 24 , 25 ]; (ii) are good sources of minerals, such as iodine (I), calcium (Ca), phosphorus (P), selenium (Se), magnesium (Mg), and zinc (Zn) representing excellent candidates for feed mineral supplementation [ 26 , 27 , 28 ]; (iii) are excellent sources of essential amino acids for the animal, such as theanine, valine, methionine, isoleucine, leucine, phenylalanine, lysin, histidine, and arginine—of which, for many, dairy serves as a source of [ 27 , 29 , 30 ]; and (iv) are readily available in Europe, Scandinavia, and the eastern seaboard of North America [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations

Newton

Pétursdóttir

Ríkharðsson

et al. 2021

Foods

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This study investigated the effect of seaweed supplementation in dairy cow diets on milk yield, basic composition, and mineral concentrations. Thirty-seven Icelandic cows were split into three diet treatments: control (CON, no seaweed), low seaweed (LSW, 0.75% concentrate dry matter (DM), 13–40 g/cow/day), and high seaweed (HSW, 1.5% concentrate DM, 26–158 g/cow/day). Cows were fed the same basal diet of grass silage and concentrate for a week, and then were introduced to the assigned experimental diets for 6 weeks. The seaweed mix of 91% Ascophyllum nodosum: 9% Laminaria digitata (DM basis), feed, and milk samples were collected weekly. Data were analyzed using a linear mixed effects model, with diet, week, and their interaction as fixed factors, cow ID as random factor, and the pre-treatment week data as a covariate. When compared with CON milk, LSW and HSW milk had, respectively, less Se (−1.4 and −3.1 μg/kg milk) and more I (+744 and +1649 μg/kg milk), while HSW milk also had less Cu (−11.6 μg/kg milk) and more As (+0.17 μg/kg milk) than CON milk. The minimal changes or concentrations in milk for Se, Cu, and As cannot be associated with any effects on consumer nutrition, but care should be taken when I-rich seaweed is fed to cows to avoid excessive animal I supply and milk I concentrations.

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Section: Introductionmentioning

confidence: 99%

Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations

Newton

Pétursdóttir

Ríkharðsson

et al. 2021

Foods

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“…The enzymatic conversion of an arginine residue into citrulline in a peptide or protein results in the loss of a positive charge that alters a number of intra-and intermolecular electrostatic interactions causing partial unfolding of the citrullinated protein [166]. Citrullination has been detected in different organisms including the red alga Chondrus crispus [167], bacteria (for review see [168]), and in humans including in tissues such as the hair follicles [169]. Citrullination has been shown to be important in human physiology, for example in terminal differentiation of the epidermis, apoptosis or the modulation of brain plasticity during postnatal life, the regulation of pluripotency [170], and cancer [171].…”

Section: Citrullination Discovery and Potential Roles In Plantsmentioning

confidence: 99%

(De)Activation (Ir)Reversibly or Degradation: Dynamics of Post-Translational Protein Modifications in Plants

Muleya

Lois

Chahtane

et al. 2022

Life

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The increasing dynamic functions of post-translational modifications (PTMs) within protein molecules present outstanding challenges for plant biology even at this present day. Protein PTMs are among the first and fastest plant responses to changes in the environment, indicating that the mechanisms and dynamics of PTMs are an essential area of plant biology. Besides being key players in signaling, PTMs play vital roles in gene expression, gene, and protein localization, protein stability and interactions, as well as enzyme kinetics. In this review, we take a broader but concise approach to capture the current state of events in the field of plant PTMs. We discuss protein modifications including citrullination, glycosylation, phosphorylation, oxidation and disulfide bridges, N-terminal, SUMOylation, and ubiquitination. Further, we outline the complexity of studying PTMs in relation to compartmentalization and function. We conclude by challenging the proteomics community to engage in holistic approaches towards identification and characterizing multiple PTMs on the same protein, their interaction, and mechanism of regulation to bring a deeper understanding of protein function and regulation in plants.

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Studies of the Biochemical Composition of Freshwater Plankton Part 2: The Amino Acids Contents in Green and Blue‐Green Algae

Havlíkík

Hanuśsová

1976

Acta hydrochim. hydrobiol.

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The composition of bound amino acids was studied in selected types of green and blue-green plankton algae by means of a new elaborated method, using paper chromatography a t the triple development of the chromatogram in the set-up: butanol: acetic acid: water at the rate of 4 : 1 : 5. Algologically and bacterially pure cultures of the green algae Ankistrodesmus falcatus, Haemutococcus pluvialis, Ghlorella pyrenoidosa, Pediastrum boryanum, Scenedesmus obliquua and of the blue-green algae Anacystis nidulans, Microcystis pulverea and Nicrocystis aeruginosa were cultivated in inorganic and in organic medium. The contents of amino acids in green algae were qualitatively and quantitatively evaluated in relation t o their physiologic condition (phase of logarithmic.growth, phase of stagnation) and to the method of nutrition. The results were compared with the contents of amino acids in blue-green algae obtained i n inonocultures from freshwater at blue-green algae water blooms.The following amino acids were found in the organismus of primary production: alanine, aspartic acid, arginine, cysteine, glutamic acid, histidine, isoleucine, leucine, lysine, proline, serine and glycine, threonine, tryptophane, tyrosine and valine. The fcllowing amino acids were predominant from the quantitative aspect: glutamic acid, threonine and serine and glycine. The composition of amino acids in green algae cultivated in an inorganic medium did not differ significantly from cultures cultivated in an organic medium. Differences in the quantitative composition of the individual amino acids were ascertained with green algae in relation to their physiologic condition. InlroductionAmino acids are present in biological material in free form, i. e. dissolved in protoplasm and cellular liquids, as well as in bound form a3 a component of cellular proteins. Most of the reports published on the amino acids contenta in algae concern bound amino acids predominantly in sea algae

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The Combined Amino Acids in Several Species of Marine Algae

Cited by 39 publications

References 22 publications

Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations

Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations

(De)Activation (Ir)Reversibly or Degradation: Dynamics of Post-Translational Protein Modifications in Plants

Studies of the Biochemical Composition of Freshwater Plankton Part 2: The Amino Acids Contents in Green and Blue‐Green Algae

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