scholarly journals Infrared Radiation Favorably Influences the Quality Characteristics of Key Lime Juice

2021 ◽  
Vol 11 (6) ◽  
pp. 2842 ◽  
Author(s):  
Ammar B. Altemimi ◽  
Asaad R. S. Al-Hilphy ◽  
Tarek Gamal Abedelmaksoud ◽  
Salam A. Aboud ◽  
Laxmikant S. Badwaik ◽  
...  
Keyword(s):  
Infrared Radiation ◽  
Heat Exposure ◽  
Titratable Acidity ◽  
Pectin Methylesterase ◽  
Physicochemical Characteristics ◽  
Conventional Heating ◽  
Lime Juice ◽  
Significant Difference ◽  
Key Lime ◽  
And Control

The effect of infrared radiation (IR) on the physicochemical characteristics, pectin methylesterase activity (PME), hydroxymethylfurfural (HMF) content, microbiological activity, color, and sensory aspects on black lime juice was studied. IR was compared to conventional thermal heating (CTH) in batch infrared extraction pasteurizer, designed to allow both infrared and conventional heating. IR resulted in a reduction in pH and Brix values and a mild increase in titratable acidity, as compared to CTH and control. After 60 days at 5 °C, the ascorbic acid percentage was decreased by 24.90%, 29.75%, and 58.31% in the control, IR and CTH, respectively. The total amount of phenols in juice treated with IR was higher as compared to CTH and control, while there was a significant decrease in the antioxidant activity. The statistical analysis reflected significantly low (p < 0.05) activity of PME for IR samples as compared to CTH and control. The amount of Hydroxymethylfurfural (HMF) in all juice samples steadily increased during the storage at 5 °C in 60 days. The microbial content of control was 3.85 log cfu/mL after 60 days at 5 °C, while it was 2.1 log cfu/mL for IR which reflected a significant difference between the IR, CTH, and control samples. Additionally, color and sensory analysis of IR treated sample when compared to control, reflected similar attributes. Overall, IR was found to be an excellent substitute for the preservation of black lime juice as a rapid pasteurization technique with less heat exposure; wherein the nutrition and health benefits of the juice could be maintained for a minimum period of 60 days.

scholarly journals Screening Triploid Hybrids of ‘Lakeland’ Limequat for Resistance to Citrus Canker

Plant Disease ◽  
2004 ◽  
Vol 88 (10) ◽  
pp. 1056-1060 ◽  
Author(s):  
Z. Viloria ◽  
D. L. Drouillard ◽  
J. H. Graham ◽  
J. W. Grosser
Keyword(s):  
Bacterial Population ◽  
Somatic Hybrids ◽  
Rank Correlation ◽  
Citrus Fruit ◽  
Citrus Canker ◽  
Citrus Limon ◽  
Spearman’S Rank Correlation ◽  
Inoculation Site ◽  
Lesion Number ◽  
Key Lime

Resistance of citrus genotypes to Xanthomonas axonopodis pv. citri, the cause of Asiatic citrus canker (ACC), was evaluated by injection infiltration of 103 and 104 CFU/ml through stomates on the abaxial surface of immature leaves. Citrus genotypes for screening comprised two autotetraploids and nine triploid hybrids of ‘Lakeland’ limequat (Citrus aurantifolia × Fortunella japonica) and their progenitors (‘Lakeland’ limequat, the autotetraploids ‘Femminello’ lemon (Citrus limon) and ‘Giant Key’ lime (C. aurantifolia), and the somatic hybrids ‘Key’ [also known as ‘Mexican’] lime + ‘Valencia’ orange and ‘Hamlin’ orange + ‘Femminello’ lemon). ‘Meiwa’ kumquat (Fortunella crassifolia) and ‘Pineapple’ sweet orange (C. sinensis) were used as known resistant and susceptible standards, respectively. Lesion number per inoculation site and bacterial population per lesion were recorded 15 to 19 days after inoculation. The assay was performed four times during a spring-summer-fall period under greenhouse conditions. Canker lesions were consistently produced by stomatal inoculation with 104 but not 103 CFU/ml. Susceptible and resistant genotypes were separated based on lesion number per inoculation site and bacterial population per lesion. Spearman's rank correlation analysis for lesion numbers on 15 genotypes common to all four assays showed significant correlations among the genotype rankings. Genotype rankings were also significantly correlated between the two bacterial population assays. Lesion number per inoculation site is sufficient for assessment of resistance of citrus genotypes to ACC without the necessity of conducting bacterial population assays. ‘Lakeland’ limequat is a promising seed parent for breeding acid citrus fruit that is resistant to ACC.

Swelling, Tensile and Thermal Behaviors of Citric Acid Crosslinked Tapioca Starch/Cellulose Biocomposite Films

2020 ◽  
Vol 1010 ◽  
pp. 514-519
Author(s):  
Salleh Morgan Noor Zulaika ◽  
Hui Lin Ong ◽  
Firuz Zainuddin
Keyword(s):  
Tensile Strength ◽  
Lemon Juice ◽  
Cellulose Content ◽  
Scanning Calorimetry ◽  
Lime Juice ◽  
Tapioca Starch ◽  
Biocomposite Films ◽  
Key Lime ◽  
Biocomposite Film ◽  
Strength Result

The biocomposite films were prepared using a solution casting method and allowed to dry in the oven of 50°C. The cellulose used in this research was extracted from the rice straw. The biocomposite films firstly were prepared without crosslinker with various cellulose content; 0.2g, 0.4g, 0.6g, 0.8g, and 1.0g wt%. Based on the tensile strength result, 0.6g of cellulose is an optimum amount to prepare the biocomposite films with various amounts of crosslinker; 1g, 2g, 3g, 4g, and 5g. The tapioca starch/cellulose biocomposite films crosslinked with lemon juices have higher tensile strength (16MPa) and lower in swelling percentage (3.32%) compared to the biocomposite films crosslinked with key lime juice (5.44%). The thermal behavior was studied based on the Differential Scanning Calorimetry test shows the biocomposite film that highly crosslinked needs higher energy during their phase change. The energy liberated in the tapioca starch/cellulose biocomposite film with key lime juice as crosslinker is 201.6 J/g while that of biocomposite film with lemon juice as crosslinker is 383.0 J/g.

Assessment of Citrus Key Lime Production Supply, Exports and Domestic Demand in Mexico before and through the Threat of Citrus Greening (HLB)

2015 ◽  
Vol 16 (1) ◽  
pp. 36-56
Author(s):  
Maria Elena Vera Villagran ◽  
L. Myriam Sagarnaga Villegas ◽  
Jose Salas Gonzalez ◽  
Juan Leos Rodriguez
Keyword(s):  
General Structure ◽  
Supply And Demand ◽  
Point Of View ◽  
Citrus Greening ◽  
Economic Point ◽  
Key Variables ◽  
Key Lime ◽  
The Right ◽  
Lime Production ◽  
The Relationship

This project looks for the relationship among variables influencing Mexican key lime supply and demand in the domestic and US market under the scenario of using a higher quantity of fertilizers as a strategy for responding against the threat of citrus greening (HLB). With the help of domestic and international databases from 2000 to 2012, a simultaneous equations model was built capturing behavioral and technical variables influencing supply and demand. The most important relationships among variables were price of the product and disposable income for the demand and use of fertilizers and exchange rate for the supply. This work gives the insight, from the economic point of view, that building a model including the right key variables will give a sense of the general structure of a market and the changes in stability due to a sanitary threat

Imposed starvation for in vitro maintenance and high regeneration of elite key lime (Citrus aurantifolia)

2017 ◽  
Vol 93 (5) ◽  
pp. 474-482
Author(s):  
Saeed Soheilivand ◽  
Amir Mousavi ◽  
Mohammad Reza Safarnejad ◽  
Naser Farrokhi ◽  
Mohsen Mardi ◽  
...  
Keyword(s):  
Citrus Aurantifolia ◽  
High Regeneration ◽  
Key Lime ◽  
In Vitro Maintenance

scholarly journals (262) Screening Citrus Germplasm for Resistance to Xanthomonas axonopodis pv. Citri

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1048E-1049 ◽  
Author(s):  
Greg McCollum ◽  
Kim Bowman ◽  
Tim Gottwald
Keyword(s):  
Effective Means ◽  
Citrus Canker ◽  
Poncirus Trifoliata ◽  
Citrus Species ◽  
Citrus Industry ◽  
Xanthomonas Axonopodis ◽  
Citrus Germplasm ◽  
Citrus Bacterial Canker ◽  
Key Lime ◽  
Needle Prick

Citrus bacterial canker [causal agent Xanthomonas axonopodis pv. citri (Xac)] is a serious threat to the citrus industry. Currently, there are no effective means to control citrus canker. Our objective was to determine the resistance of selected citrus species, citrus hybrids, and citrus relatives to Xac. Our first experiment focused on determining if differences in resistance exist among 20 C. reticulata genotypes and included three other citrus species and citrus relatives (Glycosmis pentaphylla and Clausena hardimandiana). Plants were inoculated with Xac strain A either by injection infiltration or needle-prick. Our second experiment included 10 members of the genus Citrus and Poncirus trifoliata, representing a total of 31 different selections. Plants were needle-prick inoculated with both Xac strain A and Xac strain A Wellington (AW). All inoculations were done using suspensions of Xac at a concentration of 104 cfu/mL. In both experiments, there were highly significant differences among genotypes in response to inoculation with Xac. In the first experiment, regardless of inoculation method, G. pentaphylla and C. hardimandiana were found to be highly resistant to Xac, whereas C. paradisi was least resistant. In the second experiment for both Xac strain A and AW, Chinotto sour orange, Carrizo citrange, Eustis limequat, and P. trifoliata were the most resistant. Thornless key lime × Meiwa kumquat hybrids showed a range of resistance from among the most susceptible to among the most resistant. Our results expand on previous studies on resistance of citrus and citrus relatives to Xac and indicate that there may be potential for increasing resistance by breeding using selected parents.

scholarly journals Hydrogen and Methane Production Under Conditions of Anaerobic Digestion of Key-Lime and Cabbage Wastes

2019 ◽  
Vol 39 (3) ◽  
pp. 243 ◽  
Author(s):  
Gaweł Sołowski ◽  
Izabela Konkol ◽  
Bartosz Hrycak ◽  
Dariusz Czylkowski
Keyword(s):  
Anaerobic Digestion ◽  
Hydrogen Production ◽  
Methane Production ◽  
Substrate Concentration ◽  
Suspended Solids ◽  
Batch Process ◽  
Citrus Aurantifolia ◽  
Total Solids ◽  
Neutral Ph ◽  
Key Lime

In this article, the results of key lime fruit (Citrus aurantifolia) wastes and cabbage (Brassica L.) wastes anaerobic digestion are presented. Anaerobic digestion of the wastes was performed in batch process, neutral pH (key-lime 7.47 and cabbage 7.67) and substrate concentration of Volatile Suspended Solids (VSS) 10 gVSS/L. One of the aims of this research was to check the availability of these substrates to be the source of methane and hydrogen. Key lime wastes produced 32 times more methane than raw cabbage. However, hydrogen production from cabbage was 149 times higher than key lime. The percentage of methane production in cabbage was up to 81% and in key lime was up to 75%. This research showed from the substrates comparison that efficient hydrogen production is less dependent on low pKa, pH than on total solids of the substrates.

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