scholarly journals Effects of Foliar Treatment with a Trichoderma Plant Biostimulant Consortium on Passiflora caerulea L. Yield and Quality

2020 ◽  
Vol 8 (1) ◽  
pp. 123 ◽  
Author(s):  
Tatiana Eugenia Şesan ◽  
Anca Olguța Oancea ◽  
Laura Mihaela Ştefan ◽  
Vasile Sorin Mănoiu ◽  
Marius Ghiurea ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Negative Control ◽  
Mouse Fibroblast ◽  
Spore Concentration ◽  
High Concentration ◽  
Yield And Quality ◽  
Colony Forming Units ◽  
Ultrastructural Characteristics ◽  
Algal Extracts

The influence of spore concentration on the ability of a Trichoderma consortium to colonize the Passiflora caerulea phyllosphere was evaluated by determining the effects of foliar treatments with two spore concentrations, in two repeated treatments, on the morphological, physiological, and ultrastructural characteristics, and on the yield and quality of P. caerulea. The studied crop quality features were related to its nutraceutical use: the accumulation of polyphenols and flavonoids, antioxidant activity, and effects on mouse fibroblast L929 cells. The Trichoderma consortium consisted of two strains, T. asperellum T36b and T. harzianum Td50b, and the concentrations used were 106 colony forming units (cfu)/mL and 108 cfu/mL. As a reference treatment, a commercial product that was based on herbs and algal extracts was used. As compared to the negative control, the treatment with the Trichoderma consortium at 108 cfu/mL concentration determines the accumulation of higher level of polyphenols and flavonoids and increased antioxidant activity. This enhancement of P. caerulea quality characteristics after treatment with the higher concentration of Trichoderma consortium was associated with larger leaves, increased number and size of chloroplasts, improved plant physiology characteristics, and an increased yield. The treatment with high concentration of Trichoderma consortium spores promotes phyllosphere colonization and benefits both crop yield and quality.

Influence of gibberellic acid and N6-benzyladenine on the development of seed and shot berries in the seedless grape (Vitis vinifera L.) cv. Perlette

2005 ◽  
Vol 56 (5) ◽  
pp. 497
Author(s):  
K. Usha ◽  
D. Kashyap ◽  
B. Singh
Keyword(s):  
Gibberellic Acid ◽  
Fruit Set ◽  
Vitis Vinifera L ◽  
High Concentration ◽  
Full Bloom ◽  
Seed Formation ◽  
Table Grapes ◽  
Yield And Quality ◽  
Seedless Grape

Gibberellins have been used to improve quality of grapes in several cases. However, gibberellic acid (GA) alone is not enough to improve the quality in Perlette. A field experiment was conducted on 3-year-old grape cv. Perlette trained on pergolas, to investigate the effect of bunch dipping with GA3 and N6-benzyladenine (BA) on reducing the problem of shot berries and improving the productivity of grapevines. Our observations proved that the stage of application of GA3 and BA is crucial to avoiding seed formation in seedless varieties such as Perlette for table grapes. The results showed that BA at low (10 µL/L) or high concentration (30 µL/L) at 50% of full bloom caused seed development in the seedless grape cv. Perlette, whereas no seed was formed when BA was used later at the fruit set stage. Based on our studies, we found that bunch dipping with 30 µL/L GA3 (at 50% of full bloom) and 10µL/L BA (at pea size) significantly reduced the problem of shot berries, and improved the yield and quality in grape cv. Perlette.

scholarly journals Biotransformation of Pitanga Juice by Tannase from Saccharomyces cerevisiae CCMB 520

2021 ◽  
Author(s):  
Gustavo Monteiro ◽  
Maria Araújo ◽  
Paula Barbosa ◽  
Marcelo Mello ◽  
Tonny Leite ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Antioxidant Activity ◽  
Native Species ◽  
Statistical Design ◽  
Partial Purification ◽  
Antioxidant Compounds ◽  
High Concentration ◽  
Functional Quality ◽  
Physical And Chemical

The pitanga (Eugenia uniflora L.) is a native species to Brazil and widely used by Brazilian industry, mainly in food, to juice, ice cream, soft drinks, jellies and liqueurs production. The fruit contains a high concentration of anthocyanins, flavonoids and carotenoids, which make it a promising source of antioxidant compounds. The objective of this work was to produce and purify tannase from Saccharomyces cerevisiae CCMB 520, to apply in the integral pitanga juice and to verify its physical and chemical effects. The tannase was produced under submerged fermentation in bench bioreactor. After the fermentation process the enzyme was partially purified. The partially purified tannase was applied in the integral pitanga juice using Doehlert statistical design. The effect of the enzymatic application was analyzed by means of phenolic compounds contents and antioxidant activity. Physical–chemical analyzes were carried out to investigate the Standard Identity and Quality of the juice. The best results for partial purification were obtained by ultrafiltration. After application, the total phenolics content was 4855 mg Eq. AG/L, and for the antioxidant activity was 952 μMTrolox/L (69.41%). It has been found that it is possible by means of enzymatic treatment to improve the functional quality of the integral pitanga juice.

Corrigendum to: Influence of gibberellic acid and N6-benzyladenine on the development of seed and shot berries in the seedless grape (Vitis vinifera L.) cv. Perlette

2005 ◽  
Vol 56 (9) ◽  
pp. 1009
Author(s):  
K. Usha ◽  
D. Kashyap ◽  
B. Singh
Keyword(s):  
Gibberellic Acid ◽  
Fruit Set ◽  
Vitis Vinifera L ◽  
High Concentration ◽  
Full Bloom ◽  
Seed Formation ◽  
Table Grapes ◽  
Yield And Quality ◽  
Seedless Grape

Gibberellins have been used to improve quality of grapes in several cases. However, gibberellic acid (GA) alone is not enough to improve the quality in Perlette. A field experiment was conducted on 3-year-old grape cv. Perlette trained on pergolas, to investigate the effect of bunch dipping with GA3 and N6-benzyladenine (BA) on reducing the problem of shot berries and improving the productivity of grapevines. Our observations proved that the stage of application of GA3 and BA is crucial to avoiding seed formation in seedless varieties such as Perlette for table grapes. The results showed that BA at low (10 �L/L) or high concentration (30 �L/L) at 50% of full bloom caused seed development in the seedless grape cv. Perlette, whereas no seed was formed when BA was used later at the fruit set stage. Based on our studies, we found that bunch dipping with 30 �L/L GA3 (at 50% of full bloom) and 10�L/L BA (at pea size) significantly reduced the problem of shot berries, and improved the yield and quality in grape cv. Perlette.

scholarly journals A Study on the Quality and Identity of Brazilian Pampa Biome Honey: Evidences for Its Beneficial Effects against Oxidative Stress and Hyperglycemia

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
L. C. Cruz ◽  
J. E. S. Batista ◽  
A. P. P. Zemolin ◽  
M. E. M. Nunes ◽  
D. B. Lippert ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
High Concentration ◽  
Beneficial Effects ◽  
Pampa Biome ◽  
First Time

We characterized, for the first time, the quality and identity of Brazilian Pampa biome honey and its antioxidant propertiesin vitro(FRAP, DDPH and ABTS). The potential protective effect of honey against oxidative stress induced by iron (Fe) and paraquat, (PQ) in aDrosophila melanogastermodel (in vivo) was also tested. The results indicated that all honey samples tested showed antioxidant activityin vitro. Flies treated with honey showed increased lifespan and were protected against oxidative stress induced by Fe and PQ. Despite the high concentration of sugars in honey (approximately 70–80%), our results demonstrate a hypoglycemic-like effect of honey inDrosophila. Thus, this study demonstrates the high quality of Brazilian Pampa biome honey as well as its significant antioxidant activityin vitroandin vivo, pointing to the potential use of this natural product as an alternative in the therapy of oxidative stress-associated diseases.

Influence of winter stress and plastic tunnels on yield and quality of spinach, pak choi, radish, and carrot

2018 ◽  
pp. 357
Author(s):  
Santosh Shiwakoti, Valtcho D. Zheljazkov ◽  
Vicki Schlegel
Keyword(s):  
Antioxidant Activity ◽  
Total Phenol Content ◽  
Vegetable Production ◽  
Cool Season ◽  
Pak Choi ◽  
High Tunnel ◽  
Yield And Quality ◽  
Season Extension ◽  
Cold Tolerant

Plastic tunnels are the viable options for the successful production of cold-tolerant vegetables during cold months of the milder climate regions. However, growing vegetables in northern climates can be a challenge because of long and severe winters. Therefore, we conducted a plastic tunnels study on carrot, radish, spinach, and pak choi in northern Wyoming, USA to explore the viability and quality of the vegetable production under winter stress. The objective was to quantify the effect of different season extension methods on the produce yield, its total phenol content, and antioxidant activity. The experiment consisted of three tunnel systems: high tunnel (Ht), low tunnel (Lt), and low tunnel within high tunnel (LtHt). We were able to harvest vegetables in the freezing November of Wyoming. Spinach, and pak choi had markedly higher yield in LtHt (6,410 kg ha-1 spinach and 20,644 kg ha-1 pak choi) than Ht (4,574 kg ha-1 for spinach and 12,076 kg ha-1 for pak choi) and Lt (3,253 kg ha-1 spinach and 8,242 kg ha-1 pak choi).  The concentrations of nutrients in the vegetables weren’t affected by the tunnel systems. Greater antioxidant activity of pak choi was evident in Ht than in Lt and LtHt. This experiment demonstrated that challenges of severe winter for growing cool-season vegetables can be mitigated largely by opting for LtHt rather than Lt or Ht alone.

scholarly journals Effect of White and Black Rice Addition on Robusta Coffee Powder and Brews Characteristics

el–Hayah ◽  
2017 ◽  
Vol 6 (3) ◽  
pp. 86
Author(s):  
Ita Yustina ◽  
Farid R. Abadi
Keyword(s):  
Antioxidant Activity ◽  
Coffee Bean ◽  
Black Rice ◽  
White Rice ◽  
Robusta Coffee ◽  
Yield And Quality ◽  
Randomized Design ◽  
Coffee Powder ◽  
Coffee Brews

<em>The processing methods of coffee bean are various in different regions in Indonesia. One of the methods is by adding the material of coffee bean with other ingredients such as rice. This research was aimed to investigate the effect of adding white and black rice into the yield and quality of robusta coffee within its powder and brews. The experiment used the completely randomized design, with three treatments  namely: pure coffee; coffee+white rice; and coffee+black rice. Observation parameters consisted of: rendement;color; organoleptical properties; and antioxidant activity. The results showed that the addition of black or white rice (30%) did not affected the yield, pannelist's preference for color, and the bitter level of coffee brews. However, the addition of white or black rice had a significant effect on the degree of lightness and the antioxidant activity of the coffee powder, also the panelist's preference for the aroma and taste for coffee brews. The black rice addition showed to be more preferred which  scored 3.18 for aroma and 3.55 for taste than white rice addition in coffee brews. Moreover, the color of the coffee powder of coffee + black rice became brighter (L = 35), and the antioxidant activity was increased to reach 44.74% as the highest among other treatments. The black rice addition could be used to improve the antioxidant activity of the commercial robusta coffee powder and brews with fairly consumer acceptance. </em>

scholarly journals Foliar application of plant-based biostimulants improve yield and upgrade qualitative characteristics of processing tomato

2021 ◽  
Author(s):  
Eugenio Cozzolino ◽  
Ida Di Mola ◽  
Lucia Ottaiano ◽  
Christophe El-Nakhel ◽  
Youssef Rouphael ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Nitrogen Use Efficiency ◽  
N Uptake ◽  
Brown Seaweed ◽  
Protein Hydrolysates ◽  
Nitrogen Use ◽  
Processing Tomato ◽  
Yield And Quality ◽  
Use Efficiency

Highlights- The effects of three plant-based biostimulants on yield and quality of processing tomato was explored.- Application of protein hydrolysates and seaweed extract improve marketable yield.- The biostimulants had different effect on nutritional and functional quality of tomato.- Hydrophilic antioxidant activity and ascorbic acid content increased under protein hydrolysate application.   Tomato (Solanum lycopersicum L.) is a diffused worldwide vegetable. Great amounts of fertilizers are often applied for increasing yield and quality, without considering the negative effect on the environment. A possible perspective for reducing this risk is to raise the nitrogen use efficiency (NUE) through the use of plant biostimulants, which also improve yield and quality concomitantly. The aim of the current study was to verify the potential beneficial effect of three vegetal-based biostimulants on agronomical, qualitative and nitrogen use efficiency of a processing tomato crop. The experiment provided three biostimulants (an extract of brown seaweed [SwE], a legume-derived protein hydrolysate [LDPH] and a tropical plant extract). The following assessments were carried out: marketable and unmarketable yields, mean fruits weight, firmness, pH, total soluble solids (TSS), color parameters (a/b), hydrophilic antioxidant activity (HAA), lipophilic antioxidant activity (LAA), total ascorbic acid content (AsA), total phenols, nitrate and total nitrogen content, nitrogen use efficiency, N-uptake efficiency, and N-utilization. The foliar application of biostimulants especially protein hydrolysates and seaweed extract significantly affected the marketable yield with an average increase of 18.3% over the control and 41.3% average decrease in unmarketable yield. The N-use and N-uptake efficiency followed a similar trend, with biostimulants boosting it higher than control, +18.4% and +59.3%, respectively; the nitrogen content was also higher in fruits of sprayed plants: + 21.3% over control. This finding also reflects on higher dry matter accumulation and firmness in fruits of treated plants (+10.9% and +14.1% over control, respectively). The biostimulants application, in particular SwE and LDPH, also boosted TSS (+12.8%), the a/b color ratio (+7.5%), HAA and AsA (9.8% and 114.6%, respectively). Therefore, the legume-derived protein hydrolysates and extract of brown seaweed Ecklonia maxima seem a good sustainable approach to improve yield and quality of tomato for canning industries.

Evolution of yield and quality of sainfoin (Onobrychis viciifolia Scop.) in the spring growth cycle

Agronomie ◽  
2003 ◽  
Vol 23 (3) ◽  
pp. 193-201 ◽  
Author(s):  
Giorgio Borreani ◽  
Pier Giorgio Peiretti ◽  
Ernesto Tabacco
Keyword(s):  
Growth Cycle ◽  
Onobrychis Viciifolia ◽  
Yield And Quality
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