The Characterisation and Quantitative Estimation of Betaines in Commercial Seaweed Extracts

Blunden, Gerald; Cripps, A. L.; Gordon, Sally M.; Mason, Tony; Turner, Christopher H.

doi:10.1515/botm.1986.29.2.155

Cited by 79 publications

(44 citation statements)

References 12 publications

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“…Potassium sulfate resulted in the highest increases in SOD activity in both genotypes under the 15 dS·m −1 salt level, but was not much different from seaweed extract ( Figure 2). Seaweed extract is known to contain betaines, including gamma-aminobutyric acid betaine, 6-aminovaleric acid betaine, and glycine betaine, which play an important role in enhancing chlorophyll and antioxidant enzymes [71].…”

Section: Antioxidant Enzymesmentioning

confidence: 99%

Effect of Plant Growth Stimulants on Alfalfa Response to Salt Stress

El-Sharkawy¹,

Al-Shal²,

Missaoui³

2017

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Salinity is a major impediment to crop production. This study was undertaken to compare the effect of seaweed extract, humic acid, and potassium sulfate nanoparticles in alleviating salt stress in Alfalfa (Medicago sativa L.). Seeds of ten alfalfa genotypes were germinated in a growth chamber at five salt concentrations (0%, 0.5%, 1.0%, 1.5%, and 2.00%). Salt concentrations above 1% reduced seed germination by more than 70% in most genotypes. One salt tolerant genotype (Mesa-Sirsa) and one salt sensitive (Bulldog 505) were selected and planted in greenhouse pots containing 2 kg of sand and subjected to two salt levels (10 and 15 dS·m . Plant biomass was reduced under both salt concentrations in both genotypes, with a greater magnitude in the salt sensitive genotype. Application of seaweed extract resulted in higher relative water content and proline under both salt concentrations (10 and 15 dS·m −1 ) in the salt sensitive genotype, and lower electrolyte leakage in both salt tolerant and salt sensitive genotypes, under both salt concentrations. Seaweed extract also resulted in higher catalase and SOD activities in both genotypes under 10 dS·m −1 . Catalase and SOD activities were associated with significantly (p < 0.01) reduced electrolyte leakage and increased shoot dry weight. Overall, seaweed extract seemed to have a positive effect in alleviating salt stress in alfalfa.

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Section: Antioxidant Enzymesmentioning

confidence: 99%

Effect of Plant Growth Stimulants on Alfalfa Response to Salt Stress

El-Sharkawy¹,

Al-Shal²,

Missaoui³

2017

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“…Betaines are derivatives amino acids with quaternary nitrogen atom which are commonly found in a variety of living organisms, such as animals, plant, fungi, bacteria and algae 1,2 . Physiologically, these substances have osmotic regulatory properties and can act as a methyl group donor 3 .…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of trigonelline in some Annona species by proton NMR spectroscopy

Machado

Lage

Medeiros

et al. 2013

Nat. Prod. Bioprospect.

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Abstract:A quantitative 1 H NMR method (qHNMR) was used to measure the trigonelline content in the leaves of six species of the Annona genus. The methodology employed compared the intensities of the signals at δ 9.14 (H-2) and δ 0.00, the internal standard TSP-d 4 . This measuring method was able to establish the concentration of trigonelline in the range from 0.67 to 10.04 mg·g -1 depending on the investigated extract.

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“…Attempts at increasing the detection limits of betaines using derivatization reagents have given unsatisfactory results because of the lack of reactivity of the betaines towards some reagents (Lever et al 1992). Proton magnetic resonance ( 1 H NMR) has also been developed as a method of betaine analysis for seaweed extracts and plant material (Blunden et al 1986) but has the limitation that it cannot be used to quantify the levels of betaines that are present as minor components (Tyihák et al 1994).…”

Section: Introductionmentioning

confidence: 99%