p-COUMARIC ACID CONTENT IN SWEET PEPPER UNDER FARMING METHODS

Chilling injury is the critical issue in sweet pepper fruit under low temperature storage. Present work was aimed to evaluate the effect of different concentration of methyl salicylate (MS) and L-arginine (Arg) on chilling injury and overall quality of sweet pepper fruits cv. ‘Winner’. The treatments were T1 = Control, T2 = 0.01mM MS, T3 = 0.05 mM MS, T4 = 1mM Arg, T5 = 1.5mM Arg and T6 = 0.01mM MS+1.5mM Arg. After respective treatment (for 10 min) fruits were kept at 5 ± 1 ◦C with 85-90 % RH for 28+2 days of storage. Physical, biochemical, and phytochemical parameters were studied at 7 days interval followed by two days of reconditioning at ambient conditions (25 ± 2 °C). On last removal (28+2days), sweet pepper fruits treated with combined MS and Arg treatment (T6) showed highly significant results in lower fruit weight loss (8.3%), maintained fruit colour (0.3 score) and firmness (13.4N), and reduced wrinkling (2 score), disease incidence (0.4 score), ion leakage (45.4%), alleviated chilling injury (1.7 score), retained total antioxidants (49.1%) and total phenolic content (74.4 mg 100 g-1 GAE FW) as compared to control. In addition, the ascorbic acid content was observed higher in all treatments in comparison with untreated control fruits. In conclusion, MS and Arg combine treatment improved storage potential with reduced chilling injury by maintaining higher total phenolic concentrations, ascorbic acid content and total antioxidants in terms of DPPH radical scavenging activities, and markedly maintained overall quality of sweet pepper under cold storage condition at 5 °C for 28 days.

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Effects of Fertilization and Foliar Spray Treatment on the Ascorbic Acid Content of Tomato and Sweet Pepper

Engei Gakkai zasshi ◽

10.2503/jjshs.49.85 ◽

1980 ◽

Vol 49 (1) ◽

pp. 85-92 ◽

Cited By ~ 5

Author(s):

Yutaka SHINOHARA ◽

Yoshio SUZUKI ◽

Masao SHIBUYA ◽

Muneteru YAMAMOTO ◽

Koya YAMASAKI

Keyword(s):

Ascorbic Acid ◽

Acid Content ◽

Foliar Spray ◽

Ascorbic Acid Content ◽

Sweet Pepper ◽

Spray Treatment

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INFLUENCE OF PHENOLIC ACIDS ON FORAGE STRUCTURAL CARBOHYDRATE DIGESTION

Canadian Journal of Animal Science ◽

10.4141/cjas84-152 ◽

1984 ◽

Vol 64 (5) ◽

pp. 50-51 ◽

Cited By ~ 13

Author(s):

H. G. JUNG ◽

G. C. FAHEY JR.

Keyword(s):

Tall Fescue ◽

Phenolic Acid ◽

Acid Content ◽

Coumaric Acid ◽

Cellulose Digestion ◽

Hemicellulose Degradation ◽

Structural Carbohydrate ◽

Ferulic Acids ◽

Carbohydrate Digestion

p-Coumaric acid (PCA) and ferulic acid (FA) inhibit cellulose digestion in vitro, whereas PCA stimulates hemicellulose degradation. Acid concentrations increase in tall fescue during maturation but remain stable in alfalfa. Hemicellulose and cellulose digestion by sheep is associated with phenolic acid content of tall fescue but not of alfalfa. Key words: p-Coumaric and ferulic acids, hemicellulose and cellulose digestion

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Phenolic acids and ruminal parameters of different varieties of sugarcane in natura or ensiled

Acta Scientiarum Animal Sciences ◽

10.4025/actascianimsci.v39i1.31470 ◽

2017 ◽

Vol 39 (1) ◽

pp. 35

Author(s):

Jaime Emerson Laranjeira Spínola ◽

Sidnei Tavares dos Reis ◽

Eleuza Clarete Junqueira de Sales ◽

Flávio Pinto Monção ◽

João Paulo Sampaio Rigueira ◽

...

Keyword(s):

Experimental Design ◽

Ferulic Acid ◽

Phenolic Acids ◽

Acid Content ◽

Dry Matter ◽

Neutral Detergent Fiber ◽

The Other ◽

Coumaric Acid ◽

Microbial Action

This study aimed to determine and measure the phenolic acids in four varieties of sugarcane (RB 855536, RB 765418, SP 80-1842 and SP 80-1816) as fresh and ensiled, and assess the influence of these acids on in situ degradability of dry matter and neutral detergent fiber. The experimental design was completely randomized in a factorial design. For the fraction of dry matter (DM), varieties RB 855536 and SP 80-1842 had average 17.80% higher compared to others. The SP80-1842 and RB 855536 varieties did not differ (p > 0.05), with an average of DM effective degradability of 33.70%. For silage, the highest levels of p-coumaric acid were found in the variety RB 855536, which was 24.64% higher than the varieties RB 765418 and SP 80-1842 (average 12.75%) and 52.60% of the variety SP 80-1816 (average 8.02%), since for the in natura form, varieties did not differ between each other (p > 0.05), and had an average of 8.86%. Silage variety SP 80-1816 has ferulic acid content 40.82% higher than the other varieties, with an average of 4.63%. The examination of the concentrations of phenolic acids p-coumaric and ferulic are not sufficient to justify the effect of microbial action on the varieties studied in different forms of processing.

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Effects of Different Pollens on Primary Metabolism and Lignin Biosynthesis in Pear

International Journal of Molecular Sciences ◽

10.3390/ijms19082273 ◽

2018 ◽

Vol 19 (8) ◽

pp. 2273 ◽

Cited By ~ 8

Author(s):

Shumei Li ◽

Xueqiang Su ◽

Muhammad Abdullah ◽

Yanming Sun ◽

Guohui Li ◽

...

Keyword(s):

Fatty Acid ◽

Amino Acid ◽

Acid Content ◽

Fatty Acid Content ◽

Coumaric Acid ◽

Targeted Metabolomics ◽

Lignin Synthesis ◽

Intermediate Metabolites ◽

Metabolomics Analysis

To investigate the effect of pollination on the fruit quality of ‘Dangshan Su’ pear, ‘Dangshan Su’ was fertilized by the pollen of ‘Wonhwang’ (Pyrus pyrifolia Nakai.) (DW) and ‘Jingbaili’ (Pyrus ussuriensis Maxim.) (DJ). The analysis of primary metabolites was achieved through untargeted metabolomics, and the quantitative analysis of intermediate metabolites of lignin synthesis was undertaken using targeted metabolomics. The untargeted metabolomics analysis was performed via gas chromatography-mass spectrometry (GC-MS). The targeted metabolomics analysis was performed using ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) under the multiple reaction monitoring (MRM) mode. The results showed that the metabolite content was significantly different between DW and DJ. Compared with that in DJ, the sugar and amino acid content in DW was higher and the fatty acid content was lower at 47 days after pollination (DAPs), and the sugar, amino acid, and fatty acid content in DW was lower at 63 DAPs. The intermediate metabolites of lignin synthesis were analyzed using the orthogonal partial least squares discriminant analysis (OPLS-DA) model, and the differential metabolites at 47 DAPs were p-coumaric acid, ferulic acid, sinapaldehyde, coniferyl alcohol, and sinapyl alcohol. The differential significant metabolite at 63 DAPs was p-coumaric acid. At 47 DAPs and 63 DAPs, the p-coumaric acid level was significantly different, and the p-coumaric acid content was positively correlated with lignin synthesis. The pollination pollen affects the quality of ‘Dangshan Su’ pear fruit through regulation of the sugar, amino acid, and fatty acid content; at the same time, regulating the levels of intermediate metabolites of lignin synthesis, especially the p-coumaric acid content, to affect lignin synthesis ultimately affects the stone cell content and improves the quality of the pears.

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Effect of light intensity on the ultrastructure of the filamentous cyanobacterium, Anabaena variabilis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100103565 ◽

1988 ◽

Vol 46 ◽

pp. 300-301

Author(s):

C. S. Bricker ◽

S. R. Barnum ◽

B. Huang ◽

J. G. Jaworskl

Keyword(s):

Fatty Acid ◽

Light Intensity ◽

Acid Content ◽

Fatty Acid Content ◽

Anabaena Variabilis ◽

Chloroplast Envelope ◽

Major Constituent ◽

Filamentous Cyanobacterium ◽

Photosynthetic Membrane ◽

Effect Of Light

Cyanobacteria are Gram negative prokaryotes that are capable of oxygenic photosynthesis. Although there are many similarities between eukaryotes and cyanobacteria in electron transfer and phosphorylation during photosynthesis, there are two features of the photosynthetic apparatus in cyanobacteria which distinguishes them from plants. Cyanobacteria contain phycobiliproteins organized in phycobilisomes on the surface of photosynthetic membrane. Another difference is in the organization of the photosynthetic membranes. Instead of stacked thylakolds within a chloroplast envelope membrane, as seen In eukaryotes, IntracytopIasmlc membranes generally are arranged in three to six concentric layers. Environmental factors such as temperature, nutrition and light fluency can significantly affect the physiology and morphology of cells. The effect of light Intensity shifts on the ultrastructure of Internal membrane in Anabaena variabilis grown under controlled environmental conditions was examined. Since a major constituent of cyanobacterial thylakolds are lipids, the fatty acid content also was measured and correlated with uItrastructural changes. The regulation of fatty acid synthesis in cyanobacteria ultimately can be studied if the fatty acid content can be manipulated.

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