Production of an enzymatic protein hydrolyzate from defatted sunflower seed meal for potential application as a plant biostimulant

Ugolini, Luisa; Cinti, S.; Righetti, Laura; Stefan, Alessandra; Matteo, R.; D’Avino, L.; Lazzeri, Luca

doi:10.1016/j.indcrop.2014.11.026

Cited by 70 publications

(43 citation statements)

References 40 publications

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“…This phenomenon associated to the PH-induced remolding of root advocating N uptake and translocation was described by Colla et al [64], as "nutrient acquisition response". The stimulation of root system architecture-in particular the increase in root hair density and length-was observed previously by several authors on a wide range of agronomic and horticultural species such as corn, sunflower, tomato, eggplant, lettuce and Brassica genus [27,57,64,65].…”

Section: Discussionsupporting

confidence: 61%

Nitrogen Use and Uptake Efficiency and Crop Performance of Baby Spinach (Spinacia oleracea L.) and Lamb’s Lettuce (Valerianella locusta L.) Grown under Variable Sub-Optimal N Regimes Combined with Plant-Based Biostimulant Application

et al. 2020

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An optimized nitrogen (N) fertilization may have a positive effect on leafy vegetables by increasing growth, yield and nutrient content of plants. Nevertheless, crop performance must be coupled with an increase in Nitrogen Use Efficiency (NUE) in order to limit external N inputs and to avoid N surpluses associated with environmental and health problems. The aim of the current study was to assess the effects of a legume-derived plant hydrolysates (LDPH; Trainer ® ) and N fertilization levels (0, 2.25 and 4.5 g N m −2 for spinach and 0, 2.5 and 5.0 g N m −2 for lamb's lettuce; N0%, N50%, N100%, respectively) on agronomical, biochemical, qualitative responses and NUE of these two important greenhouse leafy vegetables. Spinach and lamb's lettuce were sprayed four times during the growing period (at a concentration of 4 mL L −1 of LDPH). In baby spinach, the LDPH application elicited a significant increase at the three levels of N fertilization: +16.8%, +14.2%, and 39.4% at 0, 2.25 and 4.5 g N m −2 , respectively. Interestingly, in lamb's lettuce, the N50% plants treated with LDPH reached similar values of marketable yield in comparison to treated and non-treated plants under N100% conditions. The presumed mechanism involved in the enhancement of yield response in the two leafy greens could be associated to a better activity of the photosystem II (higher SPAD index), biochemical (higher content of chlorophyll a, b and total) and leaf nitrate status. The foliar application of LDPH produced a major fortification in lipophilic and hydrophilic antioxidant activities (+11.6 and 6.3% for spinach and lamb's lettuce, respectively). The biostimulant application also improved N-use efficiency and N-uptake efficiency compared to untreated plants: +17.8% and +18.8%, and +50% and +73.3%, for spinach and lamb's lettuce, respectively.

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Section: Discussionsupporting

confidence: 61%

Nitrogen Use and Uptake Efficiency and Crop Performance of Baby Spinach (Spinacia oleracea L.) and Lamb’s Lettuce (Valerianella locusta L.) Grown under Variable Sub-Optimal N Regimes Combined with Plant-Based Biostimulant Application

et al. 2020

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“…Biostimulants of plant origin are produced using enzymatic hydrolysis. In the production of plant biostimulants, for example, alfalfa hay, pulses, and vegetable or fruit waste may be used [13,22]. Protein hydrolysates contain amino acids, peptides, and non-protein compounds.…”

Section: Sources Of Biostimulantsmentioning

confidence: 99%

“…Protein hydrolysates contain amino acids, peptides, and non-protein compounds. Protein hydrolysates stimulate plant growth, reduce the use of inert fertilizers, and are environmentally friendly [22]. The solution, which at the same time allows for a reduction in the amount of organic waste and the creation of biostimulating preparations, is actually a fermentation process.…”

Section: Sources Of Biostimulantsmentioning

confidence: 99%

Plant Biostimulants: Importance of the Quality and Yield of Horticultural Crops and the Improvement of Plant Tolerance to Abiotic Stress—A Review

2019

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Biostimulants are among the natural preparations that improve the general health, vitality, and growth of plants and protect them against infections. They can be successfully used in both agri- and horticultural crops. The main active substances used in such preparations are humic and fulvic acids, protein hydrolysates, compounds containing nitrogen, seaweed extracts, beneficial fungi, and bacteria. Biostimulant formulations may be single- or multi-component, but the synergic action of several different components has been observed. Many groups of biostimulants have been distinguished through their method of application (soil, foliar), the material from which they were produced (plant, animal), or the process by which they were created (hydrolysis, fermentation, extraction). Natural soil stimulants can induce the development of beneficial soil organisms that provide substrates for plant growth. The use of natural preparations that are not harmful to the environment is particularly important in connection with the progressive processes of soil degradation and atmospheric pollution. This review gives an overview of the importance and influence of different natural plant biostimulants on both the yield and quality of crops.

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“…Usually, this residue is used as animal feed, but the high protein content can increase the residue value if this protein is aimed to human nutrition (Damodaran & Paraf, ). Defatted sunflower meal is known to have high quality amino acid profile, but extraction process of industrial oil often affects the biological value of protein, reducing the bioavailability as well as protein solubility (Lomascolo, Uzan‐Boukhris, Sigoillot, & Fine, ; Ugolini et al, ), especially at higher temperature and at pH value around the point of isoelectric (Damodaran & Paraf, ), which limits its application in food processing.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound assisted enzymolysis of sunflower meal protein: Kinetics and thermodynamics modeling

Dabbour

Mintah

et al. 2018

J Food Process Engineering

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This study examined the effect of dual‐frequency ultrasound (DFU) pretreatment on thermodynamics and kinetics of sunflower‐meal protein (SMP) using alcalase to improve efficiency in enzymolysis process. The concentration of hydrolyzed protein and kinetic parameters after traditional pretreatment (control) were investigated and compared with DFU‐assisted enzymolysis. The results indicated that DFU‐pretreatment enhanced SMP‐enzymolysis efficiency at different substrate and enzyme concentrations, temperature, and pH. Kinetics analysis showed DFU‐pretreatment reduced the Michaelis constant by 11.29%, while the apparent breakdown rate constant increased by 1.96%, indicating DFU‐pretreatment improved the affinity among substrate and enzyme. The rate constants for DFU‐pretreatment were increased by 45.96, 26.92, 21.14, and 27.89% at 293, 303, 313, and 323 K, respectively (p < .05). On Arrhenius kinetics, DFU reduced the activation energy, enthalpy and entropy by 24.28, 26.13, and 9.10%, respectively (p < .05). DFU had slight influence on Gibbs‐free energy when temperature increased from 293 to 323 K. Practical applications The positive impact of DFU pretreatment of sunflower meal protein on enzymatic hydrolysis kinetics makes this method suitable for use in the pharmaceutical and food process industries to yield peptides from residues of oil industry.

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Production of an enzymatic protein hydrolyzate from defatted sunflower seed meal for potential application as a plant biostimulant

Cited by 70 publications

References 40 publications

Nitrogen Use and Uptake Efficiency and Crop Performance of Baby Spinach (Spinacia oleracea L.) and Lamb’s Lettuce (Valerianella locusta L.) Grown under Variable Sub-Optimal N Regimes Combined with Plant-Based Biostimulant Application

Nitrogen Use and Uptake Efficiency and Crop Performance of Baby Spinach (Spinacia oleracea L.) and Lamb’s Lettuce (Valerianella locusta L.) Grown under Variable Sub-Optimal N Regimes Combined with Plant-Based Biostimulant Application

Plant Biostimulants: Importance of the Quality and Yield of Horticultural Crops and the Improvement of Plant Tolerance to Abiotic Stress—A Review

Ultrasound assisted enzymolysis of sunflower meal protein: Kinetics and thermodynamics modeling

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