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

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.

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

HortScience ◽

10.21273/hortsci.39.5.1062 ◽

2004 ◽

Vol 39 (5) ◽

pp. 1062-1065 ◽

Cited By ~ 27

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.

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Postharvest calcium chloride application maintains shelf life and quality of loquat (Eriobotrya japonica L.) fruit

Journal of Horticultural Science & Technology ◽

10.46653/jhst2141001 ◽

2021 ◽

pp. 1-6

Author(s):

Shaukat Hussain ◽

Zahoor Hussain ◽

Faheem Khadija ◽

Muhammad Raza Salik ◽

Mujahid Ali ◽

...

Keyword(s):

Shelf Life ◽

Calcium Chloride ◽

Room Temperature ◽

Titratable Acidity ◽

Fruit Weight ◽

Soluble Solids ◽

Eriobotrya Japonica ◽

Tropical Fruit ◽

Internal Browning

Loquat (Eriobotrya japonica L.) is an important sub-tropical fruit with very limited postharvest life. Therefore, in the current study, we investigated the effect of calcium chloride (CaCl2) treatments on the shelf life and quality of loquat fruit. After harvest loquat fruit treated with different concentrations of CaCl2 viz. 2%, 4% and 6% for 2 min were kept at room temperature (30±2oC) for 5 and 10 days. Untreated fruit were kept as control. The results showed that fruit treated with 6% CaCl2 exhibited minimum fruit weight loss (9.1%), external browning (8.83%), and internal browning (9.1%) after 10 days shelf period in contrast with control fruit. Lowest total soluble solids contents (9.11%), highest titratable acidity (0.53%) and juice (28%) contents were found in fruit treated with 6% CalCl2 as compared to other treatments. In conclusion, among the tested treatments, application of highest level of CaCl2 (6%) effectively maintained the quality of loquat fruit a room temperature.

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NITROGEN FERTILIZER EFFECT ON POSTHARVEST QUALITY OF `ARAPAHO' THORNLESS BLACKBERRY FRUIT

HortScience ◽

10.21273/hortsci.31.5.760a ◽

1996 ◽

Vol 31 (5) ◽

pp. 760a-760 ◽

Cited By ~ 1

Author(s):

Victorine Alleyne ◽

John R. Clark

Keyword(s):

Titratable Acidity ◽

Soluble Solids ◽

Postharvest Quality ◽

Acid Ratio ◽

Fruit Samples ◽

Thornless Blackberry ◽

Solids Content ◽

N Rates ◽

Fertilizer Effect

An investigation was conducted in 1994 and 1995 to evaluate the effect of N rate and timing of application on postharvest performance of `Arapaho' thornless blackberry fruit. Treatments were 0 kg N/ha, 56 kg N/ha, 112 kg N/ha single application, and 112 kg N/ha split application. The N source was ammonium nitrate. Fruit samples were hand-harvested and stored for 0–8 days. In general, `Arapaho' fruit quality was not affected by N applications. Increasing N rates increased soluble solids content but had no effect on pH, titratable acidity, sugar: acid ratio, total solids, firmness, and weight loss. Nitrogen applications increased fruit N content.

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Revalorized broccoli by-products and mustard improved quality during shelf life of a kale pesto sauce

Food Science and Technology International ◽

10.1177/1082013220983100 ◽

2021 ◽

pp. 108201322098310

Author(s):

Noelia Castillejo ◽

Ginés Benito Martínez-Hernández ◽

Francisco Artés-Hernández

Keyword(s):

Shelf Life ◽

Antimicrobial Properties ◽

Titratable Acidity ◽

Soluble Solids ◽

Antioxidant Compounds ◽

Color Differences ◽

Total Antioxidant ◽

Sensory Analyses ◽

Solids Content ◽

By Products

The effect of revalorized Bimi leaves (B) and/or mustard (M) addition, as supplementary ingredients, to develop an innovative kale (K) pesto sauce was studied. Microbial, physicochemical (color, total soluble solids content -SSC-, pH and titratable acidity –TA-) and sensory quality were studied during 20 days at 5 °C. Bioactive compounds changes (total phenolics, total antioxidant capacity and glucoraphanin contents) were also monitored throughout storage. The high TA and pH changes in the last 6 days of storage were avoided in the K+B pesto when adding mustard, due to the antimicrobial properties of this brassica seed. SSC was increased when B + M were added to the K pesto, which positively masked the kale-typical bitterness. Mustard addition hardly change yellowness of the K pesto, being not detected in the sensory analyses, showing K+B+M pesto the lowest color differences after 20 days of shelf life. The addition of Bimi leaves to the K pesto enhanced its phenolic content while mustard addition did not negatively affect such total antioxidant compounds content. Finally, mustard addition effectively aimed to glucoraphanin conversion to its bioactive products. Conclusively, an innovative kale pesto supplemented with Bimi by-products was hereby developed, being its overall quality well preserved up to 20 days at 5 °C due to the mustard addition.

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The Quality of Superior Seedless Bunches during Shelf Life as Determined by Growth on Different Rootstocks

Agriculture ◽

10.3390/agriculture11100990 ◽

2021 ◽

Vol 11 (10) ◽

pp. 990

Author(s):

A. A. Lo’ay ◽

Hamed Ismail ◽

Hazem S. Kassem

Keyword(s):

Shelf Life ◽

Soluble Solids ◽

Ion Leakage ◽

Soluble Solids Content ◽

Close Attention ◽

Oxidative Reactions ◽

Seedless Grape ◽

Metabolism Enzyme ◽

Solids Content

Vineyard rootstocks are an important tool in the local and international market for growing the Superior Seedless grape cultivar, which is highly favored by customers. As a result, it is vital to pay close attention to the quality of clusters during handling. The current study aimed to determine whether Superior Seedless vines can be grown on specific rootstocks, resulting in higher quality during shelf life. Vines of the Superior Seedless vine cultivar that were used were 13 years old and had been grown on sandy soil. These vines were grafted onto four different rootstocks (genotypes), namely Freedom, 1103 Paulsen, SO4, and Own Root. The soluble solids content (SSC%) was selected as 16%. Bunches were subsequently stored in the lab at 27 ± 1 °C with 57 ± 3% air relative humidity for three days. Rootstock 1103 Paulsen’s quality was found to be superior to that of the other rootstocks, according to the results of the study. Rootstock 1103 Paulsen maintained its ascorbic acid (AA) content, which is reflected in its antioxidant capacity, according to the results. In addition, lipid peroxidation accumulation and ion leakage percentages indicated that oxidative reactions were at their lowest levels. The results show that 1103 Paulsen decreases cellular metabolism enzyme activities at the shelf life level and improves the bunch quality of Superior Seedless (scion) grapes within 4 days of application. As a whole, the results show that the 1103 Paulsen rootstock produces Superior Seedless bunches of a high quality that is preserved throughout the shelf life period.

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

Revista Caatinga ◽

10.1590/1983-21252017v30n111rc ◽

2017 ◽

Vol 30 (1) ◽

pp. 97-108 ◽

Cited By ~ 1

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.

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The Effects of 1-Methylcyclopropene Treatment on the Fruit Quality of ‘Idared’ Apples during Storage and Transportation

Agriculture ◽

10.3390/agriculture10110490 ◽

2020 ◽

Vol 10 (11) ◽

pp. 490

Author(s):

Kazimierz Tomala ◽

Maria Małachowska ◽

Dominika Guzek ◽

Dominika Głąbska ◽

Krystyna Gutkowska

Keyword(s):

Shelf Life ◽

Gas Permeability ◽

Modified Atmosphere Packaging ◽

Titratable Acidity ◽

Soluble Solids ◽

Low Oxygen ◽

Control Groups ◽

Long Distance ◽

Postharvest Treatment

1-Methylcyclopropene (1-MCP) is applied as an inhibitor of ethylene action, which is widely used in postharvest technology to prolong the shelf life of many fruits. The aim of the study was to assess the possibility to apply 1-MCP treatment to maintain the quality of ‘Idared’ apples for long-distance transportation. The studied apples were assessed in three groups: (I) 1-MCP postharvest treatment; (II) 1-MCP postharvest treatment with Modified Atmosphere Packaging (MAP) selected gas permeability bags; and (III) control groups (with neither 1-MCP treatment, nor dedicated packaging). Apples were subjected to storage in the Ultra Low Oxygen (ULO) chamber that was applied for 0 weeks, 10 weeks and 20 weeks (three periods of storage); simulated long-distance transport (6 weeks); and simulated distribution, which was applied for 0 days, 5 days, 10 days, and 15 days (4 periods of distribution). The obtained 36 groups (three postharvest treatments per three periods of storage per four periods of distribution) were analyzed to assess firmness, total soluble solids (TSS) and titratable acidity (TA). There were differences between firmness values for control groups and those with 1-MCP applied, which were characterized by higher values of firmness (p < 0.05). Groups with 1-MCP and MAP applied combined were characterized by higher values of TSS than control groups (p < 0.05). The majority of groups with 1-MCP applied alone were characterized by higher values of TA than control groups (p < 0.05), but values for samples attributed to 1-MCP and MAP combined were not higher than for 1-MCP alone. It may be concluded that 1-MCP applied postharvest contributed to higher results of firmness and TA of ‘Idared’ apples after long-distance transportation, but combining 1-MCP with MAP did not contribute to further differences for TA. However, for TSS the observed influence was inconclusive. It may be stated that 1-MCP is a beneficial treatment for ‘Idared’ apples for long-distance transportation as it prolongs their shelf life and improves firmness.

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

Microorganisms ◽

10.3390/microorganisms8050656 ◽

2020 ◽

Vol 8 (5) ◽

pp. 656 ◽

Cited By ~ 1

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.

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

Revista Brasileira de Pesquisa em Alimentos ◽

10.14685/rebrapa.v1i2.20 ◽

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

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 ‘Tahity’ 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 °Brix); titratable acidity (in g of citric acid. 100mL-1); ratio (relationsoluble solids and titratable acidity); vitamin C (expressed in mg of ascorbic acid 100mL-1) and pH. The results obtained showed that there was significant difference in the chemical parameters evaluated, mainly those submitted to damaging treatment. DOI: http://dx.doi.org/10.14685/rebrapa.v1i2.20

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

HortScience ◽

10.21273/hortsci.44.3.666 ◽

2009 ◽

Vol 44 (3) ◽

pp. 666-670 ◽

Cited By ~ 9

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.

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