Limited hydrolysis of dehulled walnut (Juglans regia L.) proteins using trypsin: Functional properties and structural characteristics

LWT ◽  
2020 ◽  
Vol 133 ◽  
pp. 110035
Author(s):  
Feng Jin ◽  
Yaping Wang ◽  
Hengkuan Tang ◽  
Joe M. Regenstein ◽  
Fengjun Wang
Keyword(s):  
Functional Properties ◽  
Structural Characteristics ◽  
Juglans Regia ◽  
L Proteins ◽  
Hydrolysis Of

scholarly journals Modified Rhamnogalacturonan-Rich Apple Pectin-Derived Structures: The Relation between Their Structural Characteristics and Emulsifying and Emulsion-Stabilizing Properties

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1586
Author(s):  
Jessika N. Humerez-Flores ◽  
Sarah H. E. Verkempinck ◽  
Clare Kyomugasho ◽  
Paula Moldenaers ◽  
Ann M. Van Loey ◽  
...  
Keyword(s):  
Emulsion Stability ◽  
Structural Characteristics ◽  
Stability Study ◽  
Natural Food ◽  
Apple Pectin ◽  
Oil Droplets ◽  
Food Ingredients ◽  
Acidic Conditions ◽  
Hydrolysis Of ◽  
Subsequent Acid

In the context of the increasing interest in natural food ingredients, the emulsifying and emulsion-stabilizing properties of three rhamnogalacturonan-rich apple pectin-derived samples were assessed by evaluating a range of physicochemical properties. An apple pectin (AP74) was structurally modified by a β-eliminative reaction to obtain a RG-I-rich pectin sample (AP-RG). Subsequent acid hydrolysis of AP-RG led to the generation of pectin material with partially removed side chains (in particular arabinose depleted) (AP-RG-hydrolyzed), thus exhibiting differences in rhamnose, arabinose, and galactose in comparison to AP-RG. All samples exhibited surface activity to some extent, especially under acidic conditions (pH 2.5). Furthermore, the viscosity of the samples was assessed in relation to their emulsion-stabilizing properties. In a stability study, it was observed that the non-degraded AP74 sample at pH 2.5 exhibited the best performance among all the apple pectin-derived samples evaluated. This emulsion presented relatively small oil droplets upon emulsion production and was less prone to creaming than the emulsions stabilized by the (lower molecular weight) RG-I-rich materials. The AP-RG and AP-RG-hydrolyzed samples presented a slightly better emulsion stability at pH 6.0 than at pH 2.5. Yet, neither pectin sample was considered having good emulsifying and emulsion-stabilizing properties, indicated by the presence of coalesced and flocculated oil droplets.

Enzymatic hydrolysis of extruded-expelled soy flour and resulting functional properties

2006 ◽  
Vol 83 (8) ◽  
pp. 731-737 ◽  
Author(s):  
B. P. Lamsal ◽  
C. Reitmeier ◽  
P. A. Murphy ◽  
L. A. Johnson
Keyword(s):  
Enzymatic Hydrolysis ◽  
Functional Properties ◽  
Soy Flour ◽  
Hydrolysis Of

Hydrolysis of soft wheat flour: enhanced functional properties and the effect of starch on allergenicity reduction

2021 ◽  
Author(s):  
Ivana Gazikalović ◽  
Jelena Mijalković ◽  
Nataša Šekuljica ◽  
Nevena Luković ◽  
Sonja Jakovetić Tanasković ◽  
...  
Keyword(s):  
Wheat Flour ◽  
Functional Properties ◽  
Soft Wheat ◽  
Hydrolysis Of

scholarly journals The structural characteristics of starches and their functional properties

2018 ◽  
Vol 16 (1) ◽  
pp. 1003-1017 ◽  
Author(s):  
Yaeel Isbeth Cornejo-Ramírez ◽  
Oliviert Martínez-Cruz ◽  
Carmen Lizette Del Toro-Sánchez ◽  
Francisco Javier Wong-Corral ◽  
Jesús Borboa-Flores ◽  
...  
Keyword(s):  
Functional Properties ◽  
Structural Characteristics

scholarly journals Enzymatic hydrolysis of defatted soy flour by three different proteases and their effect on the functional properties of resulting protein hydrolysates

2011 ◽  
Vol 20 (No. 1) ◽  
pp. 7-14 ◽  
Author(s):  
M. Hrčková ◽  
M. Rusňáková ◽  
J. Zemanovič
Keyword(s):  
Enzymatic Hydrolysis ◽  
Functional Properties ◽  
Aqueous Dispersion ◽  
Protein Hydrolysates ◽  
Soy Flour ◽  
Degree Of Hydrolysis ◽  
Defatted Soy Flour ◽  
Sds Page ◽  
Soy Protein Hydrolysates ◽  
Hydrolysis Of

Commercial defatted soy flour (DSF) was dispersed in distilled water at pH 7 to prepare 5% aqueous dispersion. Soy protein hydrolysates (SPH) were obtained by enzymatic hydrolysis of the DSF using three different proteases (Flavourzyme 1000 L, No-vozym FM 2.0 L and Alcalase 2.4 L FG). The highest degree of hydrolysis (DH 39.5) was observed in the presence of protease Flavourzyme. SPH were used for measuring functional properties (foaming stability, gelation). Treatment with Flavourzyme improved foaming of proteins of DSF. Foaming stability was low in the presence of Novozym. Proteases treated DSF showed good gelation properties, mainly in the case of treatment with Flavourzyme. SDS-PAGE analysis showed that after enzyme ad-dition to the 5% aqueous dispersion of DSF each enzyme degraded both b-conglycinin and glycinin. In general, the basic polypeptide from glycinin showed the highest resistance to proteolytic activity. The most abundant free amino acids in the hydrolysates were histidine (30%), leucine (24%) and tyrosine (19%) in the case of the treatment with proteases Alcalase and Novozym, and arginine (22.1%), leucine (10.6%) and phenylalanine (12.9%) in the case of the treatment with Flavourzyme.  

Comparison of Yield, Antioxidant Activity and Functional Properties of Protein Hydrolysates from Tuna and Pollock Frame

2012 ◽  
Vol 554-556 ◽  
pp. 1327-1331
Author(s):  
Li Jun Zhang ◽  
Qian Cheng Zhao ◽  
Bing Bing Wang ◽  
Xue Wan ◽  
Zhi Bo Li ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Functional Properties ◽  
Protein Hydrolysate ◽  
Protein Hydrolysates ◽  
Degree Of Hydrolysis ◽  
Basic Composition ◽  
Foaming Ability ◽  
Hydrolysis Of ◽  
Better Than

Protein hydrolysates from Tuna frame (TFPH) and Pollock frame (PFPH) were prepared by papain, respectively.The yield, the basic composition content, the antioxidant activity and functional properties (solubility, emulsifying and foaming ability) and the degree of hydrolysis of the protein hydrolysates were evaluated. Results suggest that solubility, antioxidant activity of protein hydrolysate from Pollock frame are better than that of tuna frame, but the yield is lower than that of tuna frame.

Enzymatic hydrolysis of rice dreg protein: Effects of enzyme type on the functional properties and antioxidant activities of recovered proteins

2012 ◽  
Vol 134 (3) ◽  
pp. 1360-1367 ◽  
Author(s):  
Qiang Zhao ◽  
Hua Xiong ◽  
Cordelia Selomulya ◽  
Xiao Dong Chen ◽  
Honglan Zhong ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Functional Properties ◽  
Antioxidant Activities ◽  
Hydrolysis Of
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