Air and immersion heat treatments affect ethylene production and organoleptic quality of ‘Dixiland’ peaches

2006 ◽  
Vol 41 (1) ◽  
pp. 32-37 ◽  
Author(s):  
C.O. Budde ◽  
G. Polenta ◽  
C.D. Lucangeli ◽  
R.E. Murray
HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 781D-782
Author(s):  
Valeria Sigal Escalada* ◽  
Douglas D. Archbold

To determine if apple cultivars vary in their response to aminoethoxyvinylglycine (AVG) and heat treatment, alone or combined, postharvest ripening traits and storability of treated Lodi, Senshu, Red Delicious and Fuji have been studied. An aqueous solution of AVG was applied 4 weeks before harvest of each cultivar at 124 g·ha-1 a.i. Control and AVG-treated fruit were heated at 38 °C for 4 days. Fruit were ripened at ambient temperature immediately harvest and treatment, or after storage at 4 °C for 30 days. AVG reduced firmness loss in all but Fuji apples immediately after harvest, and that effect was maintained in Senshu and Red Delicious apples after 30 days in cold storage. All AVG-treated fruit showed a reduction in respiration rate and ethylene production immediately after harvest as well as after removal from cold storage. Heat treatment alone prevented firmness loss in Senshu and Red Delicious cultivars, and slightly reduced respiration rate of Lodi and Senshu apples. Ethylene production was clearly lower in heated compared to non-heated fruit in Senshu, Red Delicious and Fuji. After cold storage, AVG and heat treatments combined decreased flesh firmness loss of Lodi apples, reduced respiration in Lodi and Fuji apples, and highly repressed ethylene production of Red Delicious and Fuji fruit. Overall, AVG seemed to have a stronger effect on the measured ripening traits, and its combination with heat treatment improved fruit quality of cold-stored Lodi apples and reduced ethylene production the most for all but Lodi.


2020 ◽  
Vol 23 (07) ◽  
pp. 254-260
Author(s):  
Thair Jawad Kadhim Al-Kelabi ◽  
Mayada F. Mohamed ◽  
Hassan Al-Karagoly

Proceedings ◽  
2020 ◽  
Vol 70 (1) ◽  
pp. 69
Author(s):  
Alberto Martínez ◽  
Rocío Velázquez ◽  
Emiliano Zamora ◽  
María L. Franco ◽  
Camille Garzo ◽  
...  

The killer strains of Torulaspora delbrueckii can be used to improve the dominance of this yeast during must fermentation. The present work analyzes its usefulness for traditional sparkling wine making. T. delbrueckii killer strain dominated base wine fermentation better than non-killer strains and produced dried wines. The foam ability of T. delbrueckii base wines was very low compared to that of Saccharomyces cerevisiae. Significant positive correlations of foam parameters were found with some amounts of C4–C16 ethyl esters and proteins, and negative correlations with some antifoam alcohols. The organoleptic quality of T. delbrueckii base wines was considered unusual for cava making. While S. cerevisiae (single or mixed with T. delbrueckii) completed the second fermentation to produce dry sparkling wines with high CO2 pressure, single T. delbrueckii did not complete this fermentation, leaving sweet wines with low CO2 pressure. Death due to CO2 pressure was much higher in T. delbrueckii than in S. cerevisiae, making any killer effect of S. cerevisiae on T. delbrueckii irrelevant. However, the organoleptic quality of cava inoculated with mixtures of the two yeast species was better than that of wine inoculated exclusively with S. cerevisiae, and no deterioration in the quality of the foam was observed.


2019 ◽  
Vol 8 (2) ◽  
pp. 259
Author(s):  
Elfrimo Dwi ◽  
Anni Faridah ◽  
Ernawati .

Sala lauak is a traditional food that is easily found in West Sumatra. The development of sala leak products is carried out by reducing oil using gelatinization techniques. The process that occurs in gelatinization is when the starch granules are given water and heat, the starch granules will expand. This study aims to (1) develop sala lauak products by gelatinization techniques on oil absorption, (2) determine the organoleptic quality of sala lauak products by gelatinization technique processes, and (3) determine the fat content of sala lauak products by gelatinization technique processes. This research method is Research and Development (RnD). The results of this study in the organoleptic quality produced by sala lauak with pragelatinization flour showed a significant influence on the quality of inner texture, outer texture, taste, shape, and color. The same thing also happened to a significant reduction in fat content by three times lower using pregelatinized rice flour which is 7.4% compared to ordinary rice flour which is 25%. Kata kunci  :   Sala Lauak, Gelatinization Technique, rice flour.


2019 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Aam Gunawan

Maggot black soldier fly (Hermetia illucens) is a protein source of feed which is highly favored by poultry, especially ducks and chickens. However, it is feared that the provision of live maggot in ducks will affect the organoleptic quality of the egg, especially its taste and aroma. Therefore this study aims to determine the organoleptic quality of duck eggs fed Hermetia illucens maggot feeds in a living state. The study used 120 alabio ducks which were placed in a postal cage. The design used was a completely randomized design, each treatment using six replications. Each replication is taken egg sample to be tested panelists. The panelists used were 67 panelists who were somewhat trained. The data obtained were analyzed of variance and Duncan's multiple range test. The treatments that were tried consisted of P1: low protein rations without live maggot, P2: low protein rations with live maggot administration 40 g/bird/day, P3: high protein rations without live maggot administration, and P4: high protein rations with live maggot administration 40g/bird/day. The results showed that the treatment affected the texture, flavor, and aroma of boiled eggs. Ducks fed with high protein ration coupled with the provision of live maggot 40 g/bird/day produce softer textures, tastes quite good, and aroma more fishy. Keywords: Maggot, duck eggs, organoleptics


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