Behavior of Ten Chironja Clones at Three Sites. II. Fruit Quality

Ten chironja clonal varieties were studied at the Isabela, Corozal, and Adjuntas Substations with respect to their fruit qualities. The total soluble solids at Isabela and Corozal was 11%, significantly lower than that at Adjuntas, (15%). The total soluble solids increased as the tree became older. The citric acid content at the Isabela and Corozal Substations was 0.6%, significantly lower than that at Adjuntas, (0.9%). Acid content varied significantly between years and Substations. The Brix/acid ratio at Adjuntas was 17, significantly lower than that at Isabela and Corozal, where it was 19. The citric acid content varied among the different clonal varieties. The fruits harvested during 1971 were rounder than those of 1972, which were elongated. The fruits at Adjuntas were smaller and had a significantly lower percentage of juice than those at Isabela and Corozal, which were equal in size and juice content. Fruits at Isabela had significantly lower peel percentage than those at Corozal and Adjuntas, which did not differ. Fruits produced at Isabela had significantly more seeds than those at Corozal and Adjuntas. The number of seeds per fruit varied significantly among years and Substations. The 2-3 and 3-6 clonal varieties had 11 and 14 seconds respectively, significantly fewer than those all other clones. Therefore, these two clones should be propagated by growers who prefer chironja fruits with fewer seeds.

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Aloe vera Bio-Extract Coating Results Better Shelf Life and Fruit Quality Attributes in Pomegranate

Current Journal of Applied Science and Technology ◽

10.9734/cjast/2019/v35i330183 ◽

2019 ◽

pp. 1-9

Author(s):

Suchismita Jena ◽

Ramesh K. Goyal ◽

Anil K. Godhara ◽

Abhilash Mishra

Keyword(s):

Ascorbic Acid ◽

Shelf Life ◽

Fruit Quality ◽

Untreated Control ◽

Aloe Vera ◽

Storage Period ◽

Quality Attributes ◽

Soluble Solids ◽

Acid Ratio ◽

Juice Content

Aims: To evaluate the potentiality of bio-extract coatings for achieving extended shelf life with enhance fruit quality attributes in pomegranate under ambient storage condition. Study Design: The lab experiment conducted in complete randomized design with three repetitions on Mridula cultivar of pomegranate. Place and Duration of Study: The experiment was conducted during September 2016 at department of fruit science, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana, India. Methodology: Pomegranate freshly harvested fruits were coated with three bio-extracts coatings viz. Aloe vera (50,75 and 100%), ginger (1,2 and 3%) and mints (10,20 and 30%). The coated fruits were stored at ambient room condition in corrugated fiber board boxes for twelve days. Periodically effects of bio-extract coatings, storage period and their interaction were observed for physiological loss in weight, decay loss, juice content, TSS: acid ratio, ascorbic acid content and anthocyanin content. Results: Surface coating with Aloe vera extract 100% was found most effective in reducing physiological loss in weight (50% less reduction as compared to untreated control) whereas ginger extract 3% in reducing the decay loss of fruits (9.65%) as compared to untreated control (23.36%). Among various treatments, the coating of pomegranate fruits with Aloe vera extract 100% resulted in lowest total soluble solids to acid ratio (32.17%) and significantly highest content of juice (47.17%), anthocyanin (13.98 mg/100 g) and ascorbic acid (12.82 mg/100 g) of the fruits along with highest organoleptic rating. The quality attributes viz. total soluble solids to acid ratio, anthocyanin of fruits increased with progression of storage period, while juice content and ascorbic acid decreased. Conclusion: Bio-extract coating of Aloe vera (100%) substantially improved the shelf life with retaining better fruit quality attributes under ambient conditions and has the potential to substitute the prevalent chemical coatings for pomegranate.

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Correction of Refractometer Sucrose Readings for Citric Acid Content in Frozen Concentrate for Lemonade

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/59.2.368 ◽

1976 ◽

Vol 59 (2) ◽

pp. 368-368

Author(s):

John N Yeatman ◽

Alan J Senzel ◽

Janet A Springer

Keyword(s):

Citric Acid ◽

Acid Content ◽

Soluble Solids ◽

Regression Equations ◽

Citric Acid Content

Abstract Computer-generated regression equations to express citric acid corrections for refractometer sucrose readings in frozen concentrate for lemonade were developed from experimentally determined values for °Brix, soluble solids, and citric acid content. These equations have been included in a method for the calculation of soluble solids in frozen concentrate for lemonade. The method has been adopted as official first action.

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Studies on Characters of Chironja Seedling Trees

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v64i2.10237 ◽

1969 ◽

Vol 64 (2) ◽

Author(s):

A. Pérez-López ◽

A. Sotomayor-Ríos ◽

S. Torres-Rivera

Keyword(s):

Citric Acid ◽

Quality Index ◽

Fruit Size ◽

Soluble Solids ◽

Fruit Peel ◽

Acid Ph ◽

Size Number ◽

Acid Ratio ◽

Tree Fruit ◽

Number Of Seeds

A search for good chironja clones was performed on several chironja seedlings grown on a Typic Tropohumults soil at the Corozal Agricultural Substation . This research demonstrated that chironja seedlings can be selected for yield per tree, fruit size, number of seeds per fruit, peel weight, citric acid, pH, soluble solids to acid ratio, and quality index. However, the high coefficient of variability for number of seeds, cumulative weight and number of fruits per tree during eight bearings and the quality index indicates that the probability of selecting for these characters is higher than that for fruit size, citric acid, pH, and soluble solids/acid ratio. The study also showed a great variability of the seedlings, following the frequency distribution typical of populations, indicating that in order to maintain uniform populations the chironja must be propagated through vegetative plant tissues, like grafting, instead of by seeds.

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Cheese and processed cheese products. Determination of citric acid content. Enzymatic method

10.3403/30149932 ◽

2006 ◽

Keyword(s):

Citric Acid ◽

Acid Content ◽

Enzymatic Method ◽

Processed Cheese ◽

Citric Acid Content ◽

Cheese Products

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CITRIC ACID CONTENT OF MILK AND MILK PRODUCTS

Journal of Biological Chemistry ◽

10.1016/s0021-9258(18)86025-2 ◽

1921 ◽

Vol 48 (2) ◽

pp. 453-461

Author(s):

G.C. Supplee ◽

B. Bellis

Keyword(s):

Citric Acid ◽

Acid Content ◽

Milk Products ◽

Citric Acid Content

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Melatonin Treatment to Pomegranate Trees Enhances Fruit Bioactive Compounds and Quality Traits at Harvest and during Postharvest Storage

Antioxidants ◽

10.3390/antiox10060820 ◽

2021 ◽

Vol 10 (6) ◽

pp. 820

Author(s):

José M. Lorente-Mento ◽

Fabián Guillén ◽

Salvador Castillo ◽

Domingo Martínez-Romero ◽

Juan M. Valverde ◽

...

Keyword(s):

Antioxidant Activity ◽

Bioactive Compounds ◽

Fruit Quality ◽

Storage Period ◽

Soluble Solids ◽

First Year ◽

Quality Traits ◽

Postharvest Storage ◽

Melatonin Treatment ◽

Total Soluble Solids

The effect of melatonin pomegranate tree treatments on fruit quality and bioactive compounds with antioxidant activity at harvest and during storage at 10 °C for 60 days was assayed in two consecutive years, 2019 and 2020. In the first year, trees were treated with 0.1, 0.3 and 0.5 mM of melatonin along the developmental fruit growth cycle, and results showed that bioactive compounds (total phenolics and total and individual anthocyanins) and antioxidant activity at harvest were higher in fruits from melatonin-treated trees than in controls. Other fruit quality parameters, such as firmness, total soluble solids and aril red colour, were also increased as a consequence of melatonin treatment. In fruit from control tress, firmness and acidity levels decreased during storage, while increases occurred on total soluble solids, leading to fruit quality reductions. These changes were delayed, and even maintenance of total acidity was observed, in fruit from melatonin-treated trees with respect to controls, resulting in a fruit shelf-life increase. Moreover, concentration of phenolics and anthocyanins and antioxidant activity were maintained at higher levels in treated than in control fruits during the whole storage period. In general, all the mentioned effects were found at the highest level with the 0.1 mM melatonin dose, and then it was selected for repeating the experiment in the second year and results of the first year were confirmed. Thus, 0.1 mM melatonin treatment could be a useful tool to enhance aril content on bioactive compounds with antioxidant activity and health beneficial effects and to improve quality traits of pomegranate fruit, at harvest and during postharvest storage.

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High-density linkage map construction and identification of loci regulating fruit quality traits in blueberry

Horticulture Research ◽

10.1038/s41438-021-00605-z ◽

2021 ◽

Vol 8 (1) ◽

Author(s):

Molla F. Mengist ◽

Hamed Bostan ◽

Elisheba Young ◽

Kristine L. Kay ◽

Nicholas Gillitt ◽

...

Keyword(s):

Linkage Map ◽

Fruit Quality ◽

Titratable Acidity ◽

Fruit Weight ◽

High Density ◽

Soluble Solids ◽

Quality Traits ◽

Total Soluble Solids ◽

Fruit Quality Traits ◽

High Density Linkage Map

AbstractFruit quality traits play a significant role in consumer preferences and consumption in blueberry (Vaccinium corymbosum L). The objectives of this study were to construct a high-density linkage map and to identify the underlying genetic basis of fruit quality traits in blueberry. A total of 287 F1 individuals derived from a cross between two southern highbush blueberry cultivars, ‘Reveille’ and ‘Arlen’, were phenotyped over three years (2016–2018) for fruit quality-related traits, including titratable acidity, pH, total soluble solids, and fruit weight. A high-density linkage map was constructed using 17k single nucleotide polymorphisms markers. The linkage map spanned a total of 1397 cM with an average inter-loci distance of 0.08 cM. The quantitative trait loci interval mapping based on the hidden Markov model identified 18 loci for fruit quality traits, including seven loci for fruit weight, three loci for titratable acidity, five loci for pH, and three loci for total soluble solids. Ten of these loci were detected in more than one year. These loci explained phenotypic variance ranging from 7 to 28% for titratable acidity and total soluble solid, and 8–13% for pH. However, the loci identified for fruit weight did not explain more than 10% of the phenotypic variance. We also reported the association between fruit quality traits and metabolites detected by Proton nuclear magnetic resonance analysis directly responsible for these fruit quality traits. Organic acids, citric acid, and quinic acid were significantly (P < 0.05) and positively correlated with titratable acidity. Sugar molecules showed a strong and positive correlation with total soluble solids. Overall, the study dissected the genetic basis of fruit quality traits and established an association between these fruit quality traits and metabolites.

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