The interactive effects of enriched sources of Aspergillus ferulic acid esterase and Trichoderma xylanase on the quantitative release of hydroxycinnamic acids from oat hulls

2002 ◽  
Vol 82 (2) ◽  
pp. 251-257 ◽  
Author(s):  
P. Yu ◽  
J. J. McKinnon ◽  
D. D. Maenz ◽  
V. J. Racz ◽  
D. A. Christensen
Keyword(s):  
Ferulic Acid ◽  
Interactive Effect ◽  
Significant Proportion ◽  
Hydroxycinnamic Acids ◽  
Interactive Effects ◽  
Coumaric Acid ◽  
Ferulic Acid Esterase ◽  
Rumen Microorganisms ◽  
Oat Hulls ◽  
Combined Action

Oat hulls contain relatively high amounts of hydroxycinnamic acids, mainly ferulic (4-hydroxy-3-methoxycinnamic) and p-coumaric acids (4-hydroxy-cinnamic), which are inhibitory to cell wall biodegradability by rumen microorganisms. In this paper, a study of the interactive effects of enriched sources of Aspergillus ferulic acid esterase (A-FAE) and Trichoderma xylanase (T-XYL) at different levels on the quantitative release of ferulic acid and p-coumaric acid from oat hulls was carried out. The results show that relative to A-FAE alone, the combined action of A-FAE and T-XYL was superior in causing the release of ferulic acid [up to 41.0% (± 2.1%)], indicating that T-XYL is important in acting with A-FAE in the degradation of feruloyl-polysaccharides of oat hulls. There was no effect of A-FAE alone, but a significant effect of A-FAE in combination with T-XYL on the release of p-coumaric acid from oat hulls. However, there was no extensive release of p-coumaric acid [(maximum release of 9.0% (± 0.7%)] by A-FAE in the presence of T-XYL, indicating a specificity of A-FAE for feruloyl groups, which only efficiently releases ferulic acid and not p-coumaric acid from oat hulls. This study suggests that A-FAE with T-XYL has an interactive effect to be able to break the ester linkage between ferulic acid and the attached sugar, releasing a significant proportion of the ferulic acid from oat hulls. This action, which causes disruption of crosslinks, has the potential to improve hydrolysis of the remaining polysaccharides by rumen microorganisms, which, in turn, would improve rumen degradability of oat hulls. Key words: Ferulic acid esterase, oat hulls, hydroxycinnamic acids, biodegradation

scholarly journals Contribution and Interactions of Hydroxycinnamic Acids Found in Bran and Wholegrain Sorghum (Sorghum bicolorL. Moench): Effects on the Antioxidant Capacity and Inhibition of Human Erythrocyte Hemolysis

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Norma Julieta Salazar-López ◽  
Gustavo A. González-Aguilar ◽  
Guadalupe Loarca-Piña ◽  
Francisco J. Cinco-Moroyoqui ◽  
Ofelia Rouzaud-Sández ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Ferulic Acid ◽  
Antioxidant Capacity ◽  
Functional Foods ◽  
Hydroxycinnamic Acids ◽  
Cellular Aging ◽  
Noncommunicable Diseases ◽  
Erythrocyte Membranes ◽  
Coumaric Acid ◽  
Whole Grain

An imbalance between free radicals and antioxidants is known as oxidative stress, and it promotes cellular aging and the development of chronic noncommunicable diseases. The bioactive compounds present in food play an important role in preventing oxidative stress. The aim of this study was to determine the contributions and interactions of the hydroxycinnamic acids found in the bran and whole grain of sorghum and to evaluate their effects on the antioxidant capacity and inhibition of the hemolysis of human erythrocytes. Results showed that the caffeic acid,p-coumaric acid, and ferulic acid found in sorghum contributed to the scavenging of DPPH and ABTS radicals in various proportions. Ferulic acid, which was present in bound form in the bran and wholegrain sorghum, significantly inhibited the AAPH radical-induced oxidation of the erythrocyte membranes by 78.0 and 4.3%, respectively. Combinations of two, three, or four hydroxycinnamic acids may interact in an antagonistic or synergistic manner, thereby altering each other’s bioactivities. The various interactions between the different sorghum bioactives can have a significant impact on their potential bioactivities. These results can be useful in the design of functional foods that aim to deliver bioactives to mitigate cellular aging or noncommunicable diseases.

scholarly journals Chitosan Films Functionalized with Different Hydroxycinnamic Acids: Preparation, Characterization and Application for Pork Preservation

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 536
Author(s):  
Huimin Yong ◽  
Yunpeng Liu ◽  
Dawei Yun ◽  
Shuai Zong ◽  
Changhai Jin ◽  
...  
Keyword(s):  
Ferulic Acid ◽  
Caffeic Acid ◽  
Food Packaging ◽  
Uv Light ◽  
Antimicrobial Properties ◽  
Antimicrobial Activities ◽  
Hydroxycinnamic Acid ◽  
Hydroxycinnamic Acids ◽  
Coumaric Acid ◽  
Active Food Packaging

Hydroxycinnamic acids are one category of bioactive phenolic acids that are widely distributed in plants. In this study, chitosan (CS) was functionalized with three kinds of hydroxycinnamic acids (p-coumaric acid, caffeic acid and ferulic acid) through the carbodiimide-mediated grafting method. The obtained hydroxycinnamic-acid-grafted CSs (hydroxycinnamic acid-g-CSs) were further fabricated into food packaging films through solvent casting. For the first time, the functionalities of the different hydroxycinnamic acid-g-CS films were compared. Results showed the grafting ratio of p-coumaric acid-g-CS, caffeic acid-g-CS and ferulic acid-g-CS was 73.68, 129.42 and 91.75 mg/g, respectively. Instrumental analyses confirmed hydroxycinnamic acids conjugated with CS through amide and ester bonds. The functionalization of CS film with hydroxycinnamic acids produced a more compact microstructure and higher UV light barrier ability, mechanical strength, water vapor barrier ability, thermal stability and antioxidant and antimicrobial activities. Among the different hydroxycinnamic acid-g-CS films, caffeic acid-g-CS film presented the strongest barrier, mechanical, antioxidant and antimicrobial properties. Moreover, caffeic acid-g-CS film packaging effectively extended the shelf life of pork to 10 days at 4 °C. Our results suggest caffeic acid-g-CS film can be used in the active food packaging field.

4-O-β-ᴅ-Glucosides of Hydroxybenzoic and Hydroxycinnamic Acids — Their Synthesis and Determination in Berry Fruit and Vegetable

1986 ◽  
Vol 41 (5-6) ◽  
pp. 511-520 ◽  
Author(s):  
Bernhard Schuster ◽  
Michael Winter ◽  
Karl Herrmann
Keyword(s):  
Ferulic Acid ◽  
Gallic Acid ◽  
Caffeic Acid ◽  
Protocatechuic Acid ◽  
Hydroxycinnamic Acids ◽  
Coumaric Acid ◽  
Fruit And Vegetable ◽  
Capillary Gc ◽  
H Nmr ◽  
C Nmr

Protocatechuic acid-4-, gallic acid-4-, caffeic acid-4-, ferulic acid- and p-coumaric acid-O-β-ᴅ-glucoside were synthesized. These substances were characterized by UV, 1H NMR, 13C NMR and FAB-MS. Their proportions in berry fruit and vegetable were determined by means of HPLC and capillary GC.

Interactive toxic effects of agrochemicals on aquatic organisms

1999 ◽  
Vol 40 (1) ◽  
pp. 357-364 ◽  
Author(s):  
A. Kungolos ◽  
P. Samaras ◽  
A. M. Kipopoulou ◽  
A. Zoumboulis ◽  
G. P. Sakellaropoulos
Keyword(s):  
Daphnia Magna ◽  
Marine Bacterium ◽  
Methyl Parathion ◽  
Vibrio Fischeri ◽  
Interactive Effect ◽  
Algal Growth ◽  
Aquatic Organisms ◽  
Interactive Effects ◽  
Selenastrum Capricornutum ◽  
Toxic Compound

The effects of three common agrochemicals, lindane, methyl parathion and atrazine, on crustacean Daphnia magna, alga Selenastrum capricornutum and marine bacterium Vibrio fischeri were investigated in this study. Methyl parathion was the most toxic compound towards all three organisms, while lindane was more toxic to Daphnia magna and Vibrio fischeri than atrazine, and atrazine was more toxic to Selenastrum capricornutum than lindane. Among the three aquatic organisms, Selenastrum capricornutum was most sensitive in detecting lindane and atrazine toxicity, while Daphnia magna was most sensitive in detecting methyl parathion toxicity. The interactive effects of the pesticides were also investigated. The interactive effect between lindane and methyl parathion on survival of Daphnia magna was synergistic, while the ones between lindane and atrazine and between methyl parathion and atrazine were generally additive. The interactive effect of the three pesticides applied together on Daphnia magna was synergistic. The interactive effect of the three pesticides on the growth of Selenastrum capricornutum was antagonistic with few cases of addition, while the effect of all the three pairs of pesticides on algal growth was also antagonistic. The interactive effect of lindane and methyl parathion on Vibrio fischeri was additive.

Categorization flexibility and unconventional choices: is life an adventure?

2020 ◽  
Vol 54 (8) ◽  
pp. 1963-1986
Author(s):  
Tilottama G. Chowdhury ◽  
Feisal Murshed
Keyword(s):  
Interactive Effect ◽  
Interactive Effects ◽  
Cognitive Capacity ◽  
Purchase Behavior ◽  
Consumer Decision Making ◽  
Cross Sectional ◽  
Content Type ◽  
Cross Domain ◽  
Multiple Domains

Purpose This paper proposes that categorization flexibility, operationalized as the cognitive capacity that cross-categorizes products in multiple situational categories across multiple domains, might favorably influence a consumer’s evaluation of unconventional options. Design/methodology/approach Experimental research design is used to test the theory. An exploratory study first establishes the effect of categorization flexibility in a non-food domain. Study 1 documents the moderating role of decision domain, showing that the effect works only under low- (vs high-) consequence domain. Studies 2A and 2B further refine the notion by showing that individuals can be primed in a relatively higher categorization flexibility frame of mind. Study 3 demonstrates the interactive effect of categorization flexibility and adventure priming in a high-consequence domain. Study 4 integrates the interactive effects of decisions with low- vs high-consequence, adventure priming and categorization flexibility within a single decision domain of high consequence. Findings Consumers with higher- (vs lower-) categorization flexibility tend to opt for unconventional choices when the decision domain entails low consequences, whereas such a result does not hold under decision domain of high consequences. The categorization flexibility effects in case of low-consequence decision domain holds true even when consumers are primed to be categorization flexible. Furthermore, with additional adventure priming, consumers show an increased preference for unconventional options even under a decision domain with high consequence. Research limitations/implications This study could not examine real purchase behavior as results are based on cross-sectional, behavioral intention data. In addition, it did not examine the underlying reason for presence of cross-domain categorization flexibility index. Practical implications The results suggest that stimuli may be tailored to consumers in ways that increase the salience and the perceived attractiveness of unconventional choices. Further, data reinforce the notion of cross-categorical interrelations among different domains, which could be leveraged by marketers. Originality/value This study represents the first documentation of the potential ways by which unconventional product choice might be a function of individuals’ categorization flexibility level across different types of decision domains. The findings yield implications that are novel to both categorization and consumer decision-making literature.

The specificity and the ability ofAspergillus feruloyl esterase to releasep-coumaric acid from complex cell walls of oat hulls

2004 ◽  
Vol 79 (7) ◽  
pp. 729-733 ◽  
Author(s):  
Peiqiang Yu ◽  
John J McKinnon ◽  
David D Maenz ◽  
Vern J Racz ◽  
David A Christensen
Keyword(s):  
Cell Walls ◽  
Feruloyl Esterase ◽  
Complex Cell ◽  
Coumaric Acid ◽  
Oat Hulls

scholarly journals Does Exposure to Multicultural Experience Enhance All Individuals’ Creative Problem-Solving Ability?

2017 ◽  
Vol 5 (2) ◽  
pp. 14 ◽  
Author(s):  
Mehrdad Fazeli Falavarjani ◽  
Forozan Irandust
Keyword(s):  
Problem Solving ◽  
Cognitive Processes ◽  
Interactive Effect ◽  
Openness To Experience ◽  
Interactive Effects ◽  
Creative Problem Solving ◽  
Multicultural Experience ◽  
Diverse Community ◽  
Creative Problem ◽  
Cultural Cues

Today’s diverse community often includes culturally rich environments that contain cues pertaining to more than one culture. These cultural cues can shape cognitive processes, such as creativity. This study aims to investigate the interactive effects of Openness to Experience, Extroversion and Multicultural Experience (including the real and desired experiences) on creative problem-solving ability using the quantitative method on a diverse sample of international students (N= 102). The findings indicate that the interactive effect of extensive multicultural experience and Openness to Experience predict the creative solution. It means the multicultural experience is beneficial for individuals to foster creative ability when they are highly open to experience, whereas, among those who are not open, more extensive multicultural experience do not lead to enhancement of creating the correct solution. Furthermore, this interaction term was not pronounced among the extroverted individuals. Implications of these findings for promoting creativity in learning environments are discussed.

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