scholarly journals Scab Resistant Apple Cultivars for Juice Production

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Monika Mieszczakowska-Frąc ◽  
Witold Płocharski ◽  
Dorota Kruczyńska ◽  
Jarosław Markowski
Keyword(s):  
Titratable Acidity ◽  
Laboratory Method ◽  
Soluble Solids ◽  
Chemical Components ◽  
Code Of Practice ◽  
Juice Extraction ◽  
Apple Cultivars ◽  
Solids Content ◽  
Selection Of

Abstract The purpose of this experiment was a selection of scab resistant apple cultivars suitable for juice production. Special attention was paid to cloudy juices. During three successive seasons, apple cultivars were processed into juices using laboratory method of juice extraction. Considering the possibility of both clear and cloudy juice production, apples were pressed with and without mash enzymation. The parameters investigated were: pressing yield, titratable acidity, soluble solids, juice density, and juices’ sensory characteristics. Average values indicate that all the cultivars fulfilled the requirements of the Code of Practice of the European Fruit Juice Association concerning investigated chemical components, however, in single years, there were some deviations that should be taken into consideration offering single cultivar juices. Considering a low yield of juice without mash enzymation (below 70%), cultivars ‘Renora’ and ‘Retina’ are not recommended for cloudy juice production. Sensory quality of juices, irrespectively if cloudy or clear, depended mostly on taste acceptability and in fact on soluble solids to acidity ratio. Juices with the ratio above 17 were usually scored higher concerning the taste than those with lower values. An example of exception was ‘Free Redstar’ which is highly astringent. Considering the efficiency of pressing and soluble solids content several investigated cultivars were highly suitable for concentrated apple juice production. Especially valuable may be considered ‘Regine’, ‘Rebella’, ‘Sawa’, and ‘Topaz’ and can be recommended for planting in industrial orchards, which became of special interest in recent years.

scholarly journals Fruit quality of ‘Eva’ e ‘Princesa’ apples grown under nitrogen fertigation in semiarid climate

2015 ◽  
Vol 19 (10) ◽  
pp. 967-972 ◽  
Author(s):  
João M. de S. Miranda ◽  
Ítalo H. L. Cavalcante ◽  
Inez V. de M. Oliveira ◽  
Paulo R. C. Lopes ◽  
Joston S. de Assis
Keyword(s):  
Fruit Quality ◽  
Skin Color ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Economic Viability ◽  
Fruit Firmness ◽  
Fruit Characteristics ◽  
Apple Cultivars ◽  
Fruit Mass

ABSTRACTThe production of high quality fruits is a necessary factor for the adaptation and production of plant species with economic viability. Thus, an experiment was conducted from July 2012 to January 2013 to evaluate the fruit quality of the ‘Eva’ and ‘Princesa’ apple cultivars as a function of nitrogen fertilization in Petrolina, PE, Brazil. The experimental design consisted of randomized blocks, with treatments distributed in a factorial arrangement 2 x 4, corresponding to apple cultivars (Eva and Princesa) and nitrogen doses (40; 80; 120 and 160 kg of N ha-1), with four replications and three plants in each plot. The fruit characteristics, such as fruit mass, skin color (luminosity, chromaticity, and colour angle), size (width and length), pulp firmness, titratable acidity (TA), soluble solids (SS) and the SS/TA ratio, were recorded. Nitrogen doses do not affect fruit quality of studied apple cultivars. The fruit quality attributes are different between apple cultivars: fruit firmness, SS/TA ratio, fruit mass and fruit diameter are superior for Princesa cultivar, while the fruit length for Eva cultivar is superior.

scholarly journals PHYTOREGULATORS ON BUD FERTILITY AND CLUSTER QUALITY OF ‘THOMPSON SEEDLESS’ GRAPES GRAFTED ONTO ‘RAMSEY’ ROOTSTOCK

2017 ◽  
Vol 30 (1) ◽  
pp. 97-108 ◽  
Author(s):  
PATRÍCIA FERNANDA INÁCIO VILAR ◽  
◽  
EDER IGNÁCIO DE SOUZA ◽  
LAISE DE SOUSA SANTOS ◽  
EMANUEL ALMEIDA MARTINEZ ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Basal Region ◽  
Thompson Seedless ◽  
Fresh Material ◽  
Fertility Potential ◽  
Seedless Grapes ◽  
Solids Content ◽  
Cluster Quality

ABSTRACT The objective of this work was to evaluate the influence of Trinexapaque-ethyl (TrixE) and benzyladenine (BA) on the fertility of buds and the quality of bunches of „Thompson Seedless‟ grapes grafted onto „Ramsey‟ rootstock, in the Vale São do Francisco. The experimental design consisted of randomized blocks with 16 treatments (doses and number of applications of the plant regulators TrixE and BA), with four replications, each composed of three plants, with one plant per plot. The variables analyzed were: overall potential bud fertility, potential of the basal, median and apical branches of the plant; fertility of potential buds from the basal region of the basal and median branches; fertility of overall real buds, and of the median and apical branches; diameter of the basal, median and apical branches; Falker chlorophyll index a, b and total; sprouting buds, number of clusters per branch, clusters per plant, branches per plant; berry diameter, length, volume; fresh material mass; soluble solids content (SS), titratable acidity (AT) and SS/AT relationship; diameter, length, mass of fresh material from the clusters; shatter, fresh material mass of the rachis and rachis diameter . It was shown that the TrixE applied in isolation , one, two or three times in doses of 20 mg L -1, or associated with BA in a single application of 120 or 240 mg L-1, increased the rate of real fertility, but did notaffect the length of the clusters or the vegetative vigor of the plants.

scholarly journals Products of Lactobacillus delbrueckii subsp. bulgaricus Strain F17 and Leuconostoc lactis Strain H52 Are Biopreservatives for Improving Postharvest Quality of ‘Red Globe’ Grapes

2020 ◽  
Vol 8 (5) ◽  
pp. 656 ◽  
Author(s):  
Xiang Fang ◽  
Qinchun Duan ◽  
Zhuo Wang ◽  
Fuyun Li ◽  
Jianxiong Du ◽  
...  
Keyword(s):  
Weight Loss ◽  
Decay Rate ◽  
Titratable Acidity ◽  
Inhibitory Effect ◽  
Lactobacillus Delbrueckii ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Table Grapes ◽  
Solids Content

‘Red Globe’ table grapes are large, edible, seeded fruit with firm flesh that tastes good, but can have poor postharvest shelf-life. This study was conducted to explore the effects of products of Lactobacillus delbrueckii subsp. bulgaricus strain F17 and Leuconostoc lactis strain H52 on ‘Red Globe’ table grapes for the enhancement of shelf-life and improvement of grape quality characteristics during postharvest storage. Strains F17 and H52 were isolated from traditional fermented yak milk obtained in the Qinghai–Tibetan Plateau. Samples from untreated and treated grapes were analyzed for physicochemical, biochemical, and microbiological properties (weight loss, decay rate, pH, total soluble solids content, titratable acidity, total phenols, sensory evaluation, and microbial growth) for 20 days. The results demonstrated that supernatants from both strains significantly reduced weight loss, decay rate, aerobic mesophilic bacteria, and coliform bacteria counts; delayed maturity and senescence of table grapes; and reduced titratable acidity and total phenols. However, the supernatant of strain F17 was more effective and resulted in better sensory evaluations and had a significant inhibitory effect on yeast and molds by day 5. Meanwhile, the supernatant from strain H52 had a significant inhibitory effect on fungi over the whole storage period. In addition, the results of the Pearson correlation analysis suggested that weight loss, decay rate, total soluble solids content, and microorganisms were highly correlated with the sensory evaluation data and quality of postharvest grapes when treated with the products of strain F17. On the basis of these data and sensory organoleptic qualities, the supernatant containing products from strain F17 had the best potential as a biopreservative to improve the postharvest quality of ‘Red Globe’ table grapes.

scholarly journals The Effect of Nanocoatings Enriched with Essential Oils on ‘Rocha’ Pear Long Storage

Foods ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 240 ◽  
Author(s):  
Custódia Gago ◽  
Rui Antão ◽  
Cristino Dores ◽  
Adriana Guerreiro ◽  
Maria Graça Miguel ◽  
...  
Keyword(s):  
Shelf Life ◽  
Sodium Alginate ◽  
Microbial Growth ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Fruit Samples ◽  
Solids Content ◽  
Internal Browning ◽  
Lemongrass Essential Oil

The effect of coating ‘Rocha’ pears with alginate-based nanoemulsions enriched with lemongrass essential oil (LG) or citral (Cit) was investigated. Fruit were treated with the nanoemulsions: sodium alginate 2% (w/w) + citral 1% (w/w) (Cit1%); sodium alginate 2% (w/w) + citral 2% (w/w) (Cit2%); sodium alginate 2% (w/w) + lemongrass 1.25% (w/w) (LG1.25%); sodium alginate 2% (w/w) + lemongrass 2.5% (w/w) (LG2.5%). Then, fruit were stored at 0 °C and at 95% relative humidity, for six months. Fruit samples were taken after two, four and six months, and then placed at 22 °C. Upon removal and after 7 d shelf-life, fruit were evaluated for colour CIE (L*, h◦), firmness, soluble solids content (SSC), titratable acidity (TA), weight loss, electrolytic leakage, microbial growth, symptoms of superficial scald and internal browning. All nanoemulsions had droplets in the nano range <500 nm, showed uniformity of particle size and stable dispersion. Cit-nanoemulsions had lower droplet size and higher stability than LG. No nanoemulsion showed cytotoxicity. Coatings reduced fruit colour evolution and preserved better firmness than control. After shelf-life, better firmness was found in LG-coated fruit. Coatings did not affect SSC and TA. Microbial growth was below the safety limits in all treatments. Fruit treated with LG-nanoemulsions did not show scald symptoms and panelists preferred LG1.25% coated fruit. Cit2% treated fruit showed the highest scald and internal browning symptoms, while LG1.25% did not show any disorders. This study suggests that LG-nanocoatings have the potential for preserving the quality of ‘Rocha’ pear.

scholarly journals Post harvest evaluation of physical-chemical parameters of mechanically damaged Tahiti acid limes

2010 ◽  
Vol 1 (2) ◽  
pp. 79
Author(s):  
Michel Shoiti Tamura ◽  
Roselene Ferreira Oliveira ◽  
Simone Correia Molina ◽  
Edmar Clemente
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Chemical Parameters ◽  
Post Harvest ◽  
Physical Chemical ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design ◽  
Solids Content

<p>From harvest to consumption, fruit and vegetables suffer a series of mechanical damages which, depending on their sensitiveness, may cause damages that put their final quality at risk. This work had as its objective evaluate the post harvest quality of mechanically damaged &lsquo;Tahity&rsquo; acid limes. The experiment was carried out in a completely randomized design, with 3 repetitions and 7 fruits per treatment, mechanical damages were then evaluated by cutting and impacting in comparison to healthy fruits (control), and maintained for periods of 0, 3. 6, 9, 12, 15 and 18 days, thus obtaining a 3 x 7 factorial experiment. Analyses were made throughout the 18 days, so as to determine the total soluble solids content (expressed in &deg;Brix); titratable acidity (in g of citric acid. 100mL<sup>-1</sup>); ratio (relationsoluble solids and titratable acidity); vitamin C (expressed in mg of ascorbic acid 100mL<sup>-1</sup>) and pH. The results obtained showed that there was significant difference in the chemical parameters evaluated, mainly those submitted to damaging treatment.</p><p>&nbsp;</p><p>DOI: http://dx.doi.org/10.14685/rebrapa.v1i2.20</p>

scholarly journals The Influence of Climate on Fruit Development and Quality of Four Low-chill Peach Cultivars

HortScience ◽  
2009 ◽  
Vol 44 (3) ◽  
pp. 666-670 ◽  
Author(s):  
Todd W. Wert ◽  
Jeffrey G. Williamson ◽  
Jose X. Chaparro ◽  
E. Paul Miller ◽  
Robert E. Rouse
Keyword(s):  
Fruit Development ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
North Central ◽  
Southwest Florida ◽  
The North ◽  
Solids Content

The effect of climate was observed on fruit quality of four low-chill peach cultivars (Flordaprince, Flordaglo, UFGold, and TropicBeauty). The cultivars were evaluated in three locations (north–central, central, and southwest Florida). Soluble solids content (SSC), titratable acidity (TA), SSC:TA ratio, fruit weight, blush, and fruit development period (FDP) were determined. Longer FDPs were observed at the north–central location than at the southwest location. Fruit development and the expression of quality attributes were affected by location during fruit growth with higher color and SSC and shorter FDP occurring under warmer conditions. Within locations, ‘UFGold’ had the shortest FDP except at the southwest location where its chilling requirement may not have been met. At the central and southwest locations, ‘UFGold’ also tended to have lower TA values and higher SSC;TA ratios than the other cultivars.

scholarly journals The Influence of 1-Methylcyclopropene on `Cortland' and `McIntosh' Apple Quality Following Long-term Storage

HortScience ◽  
2004 ◽  
Vol 39 (5) ◽  
pp. 1062-1065 ◽  
Author(s):  
John M. DeLong ◽  
Robert K. Prange ◽  
Peter A. Harrison
Keyword(s):  
Shelf Life ◽  
Storage Period ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Long Term Storage ◽  
Solids Content ◽  
Apple Quality ◽  
Term Storage

`Redcort Cortland' and `Redmax' and `Summerland McIntosh' apples (Malus ×domestica Borkh.) were treated with 900 nL·L-1 of 1-methylcyclopropene (1-MCP) for 24 hours at 20 °C before storage and were kept at 3 °C in either a controlled atmosphere (CA) of 2 kPa O2 and <2.5 kPa CO2 or in an air (RA) environment for up to 9 months. After 4.5 months, half of the fruit were treated with a second 900 nL·L-1 1-MCP application in air at 3 °C for 24 hours and then returned to RA or CA storage. At harvest and following removal at 3, 6, and 9 months and a 7-day shelf life at 20 °C, fruit firmness, titratable acidity (TA) and soluble solids content (SSC) were measured, while internal ethylene concentrations (IEC) in the apple core were quantified after 1 day at 20 °C. Upon storage removal and following a 21-day shelf life at 20 °C, disorder incidence was evaluated. 1-MCP-treated apples, particularly those held in CA-storage, were more firm and had lower IEC than untreated fruit. Higher TA levels were maintained with 1-MCP in all three strains from both storages, while SSC was not affected. Following the 6- and/or 9-month removals, 1-MCP suppressed superficial scald development in all strains and reduced core browning and senescent breakdown in RA-stored `Redmax' and `Summerland' and senescent breakdown in RA-stored `Redcort'. 1-MCP generally maintained the quality of `Cortland' and `McIntosh' fruit held in CA and RA environments (particularly the former) to a higher degree than untreated apples over the 9-month storage period. A second midstorage application of 1-MCP at 3 °C did not improve poststorage fruit quality above a single, prestorage treatment.

scholarly journals Road transport vibration stress impact on ‘Palmer’ mangoes quality and shelflife

2021 ◽  
Vol 43 (2) ◽  
Author(s):  
Josenara Daiane de Souza Costa ◽  
Acácio Figueiredo Neto ◽  
Nelson Cárdenas Olivier ◽  
Marcos Antônio da Silva Irmão ◽  
Marylia de Sousa Costa ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Road Transport ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Storage Quality ◽  
Vibration Machine ◽  
Vibration Stress ◽  
Absorbance Difference ◽  
Solids Content

Abstract Studying the causes of postharvest fruit loss is important to avoid reduction of quality and quantity for the consumer due, for example, to the influence of frequent impacts from vibrations during transportation. In this sense, this study evaluates the storage quality of ‘Palmer’ mangoes after being subjected to different simulated road transport vibrations. Vibration was simulated from the analysis of the profile of the frequencies generated in road transport of fruit, determined in a tractor trailer. ‘Palmer’ mangoes stored after vibration stress wereevaluated for: mass loss, absorbance difference index (IAD), peel and pulp browning index (BI), pulp firmness, soluble solids content, and titratable acidity. The development of a vibration machine made it possible to satisfactorily simulate specific vibration frequencies. Vibration stress during simulated transport led to accelerated weight loss, decreased pulp firmness, and peel browning in ‘Palmer’ mangoes.

scholarly journals Changes in the Quality of Old Apple Cultivars After Freeze-Drying

2020 ◽  
Vol 24 (2) ◽  
pp. 175-185
Author(s):  
Fryderyk Sikora ◽  
Sabina Lachowicz ◽  
Ireneusz Kapusta ◽  
Marek Dylawerski ◽  
Wojciech Zyska ◽  
...  
Keyword(s):  
National Park ◽  
Freeze Drying ◽  
Soluble Solids ◽  
Drying Process ◽  
Dominant Group ◽  
Mineral Components ◽  
Apple Cultivars ◽  
Solids Content ◽  
Organic Acid Content

AbstractThere are several thousand different cultivars of apple trees but only a limited number are cultivated on an industrial scale. Old cultivars can be useful, for example, in the processing industry due to their different composition. In many cases, they have higher organic acid content. The content of mineral components, colour, and polyphenols in the fruit of 7 old apple tree cultivars, growing in the Wolinski National Park, was studied. The changes that occurred in the fruit after freeze-drying were also evaluated. The trees from which the fruit was picked for analysis, despite the lack of chemical protection, were fruiting and the apples had only a few symptoms of damage caused by pests or diseases. The fruit was characterised by a high soluble solids content (14.4-16.4%), in which sugars and especially fructose dominated. The number of organic acids varied greatly and ranged from 0.27 (Oberlander Himbeerapfel) g to 1.07 g/100 g (Winter Goldparmane). The content of polyphenols in fresh apples ranged from 186 mg (Horneburger Pfannkuchenapfel) to 354 mg/100 g (Winter Goldparmane) and increased after freeze-drying from 666 mg (Weisser Winterkalvill) to 1486 mg/100 g (Winter Goldparmane). The dominant group of polyphenolic compounds was phenolic acid. The freeze-drying process caused unfavourable changes in the colour of the pulp. The fruits of Oberlander Himbeerapfel cultivar were most susceptible to these changes. However, the least darkened fruit of Horneburger Pfannkuchenapfel.

scholarly journals Postharvest Quality of Dragon Fruit (Hylocereus spp.) after X-ray Irradiation Quarantine Treatment

HortScience ◽  
2008 ◽  
Vol 43 (7) ◽  
pp. 2115-2119 ◽  
Author(s):  
Marisa M. Wall ◽  
Shakil A. Khan
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
X Ray ◽  
Irradiation Treatment ◽  
Dragon Fruit ◽  
Fruit Decay ◽  
Irradiation Stress ◽  
Solids Content

The quality of three dragon fruit clones (Hylocereus spp.) was determined after x-ray irradiation for disinfestation of quarantine pests. Fruit were treated with irradiation doses of 0, 200, 400, 600, or 800 Gy and stored for 12 days at 10 °C. Irradiation did not affect soluble solids content, titratable acidity, or fructose concentrations. Glucose, sucrose, and total sugar concentrations decreased linearly as dose increased. Minimal softening occurred in the outer flesh layers for fruit treated with 400 or 600 Gy irradiation. Surface color, peel injury, and bract appearance differed among the three clones with irradiation stress, but in all cases, visible changes were minor. Fruit decay was absent or minimal, and disease ratings were not affected by irradiation. Irradiation treatment of dragon fruit at doses 800 Gy or less would ensure visual and compositional quality while providing quarantine security.

Sign in / Sign up

Export Citation Format

Share Document