Kuson, Pramote

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Kuson, Pramote
Alternative Name
Kuson, P.
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Email
pramote.ku@kmitl.ac.th

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    Demonstration tests of infrared peeling system with electrical emitters for tomatoes
    (2016-01-01)
    Pan, Zhongli
    ;
    El Mashad, H. M.
    ;
    Li, X.
    ;
    Khir, R.
    ;
    Atungulu, G.
    Infrared (IR) dry-peeling is an emerging technology that could avoid the drawbacks of steam and lye peeling of tomatoes. The objectives of this research were to evaluate the performance of an IR peeling system at two tomato processing plants in California and to compare product quality, peelability, and energy consumption of IR and steam peeling. The system was continuously operated using tomatoes of different sizes and cultivars. High percentages (62% to 85%) of fully peeled tomatoes were obtained and varied depending on tomato cultivar and seasonality. IR dry-peeled tomatoes had a firmer texture than steam and lye peeled tomatoes. IR peeling achieved a peeling loss in the range of 17% to 42%, which was lower than typical loss in the industry. Small tomatoes had higher loss than large tomatoes in the late season. Thermal energy consumption of the proposed technology in full-scale production (10 ton h<sup>-1</sup>) is predicted to be 117.0 and 137.3 MJ ton<sup>-1</sup> for indoor and outdoor operation, respectively. The estimated energy savings of IR dry-peeling should be 22% and 28% compared to lye and steam peeling, respectively. The demonstration results showed that the IR dry-peeling technology could be a viable alternative to lye and steam peeling.
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    Measuring the impact of tractor trailers on soil compaction for typical sugarcane-haulage operations in Thailand
    (2017-04-01)
    Thungsotanon, Dithaporn
    ;
    Usaborisut, Prathuang
    ;
    Kuson, Pramote
    ;
    Kulketwong, Chompoonud
    ;
    Abdullakasim, Wanrat
    Mechanization associated with operations in sugarcane production may lead to severe soil compaction. Soils may be particularly susceptible during harvesting and transport of sugarcane from the fields. A tractor towing a trailer can be a useful mean of sugarcane transport even in moist soil, but this can lead to soil compaction. In this study, the influence of tractor traffic when towing two types of trailers, i.e. a full-trailer (one on the front and two axles tandem on the rear) and a semitrailer (two axles tandem), were studied. The results showed that after the passage of a tractortowed trailer, soil bulk density in the test field was increased significantly. The passage of a tractor-towed trailer increased the penetration resistance to more than 3 MPa. The effect of a vehicle passage could reach to soil depths exceeding 45 cm, and increased as axle load increased. Analysis of the soil stresses indicated that the soil had been subjected not only to the compression stress but also the shear stress. The maximum principal stress (s1) generated by a tractor-towed semi-trailer was high. Further study should determine the thresholds for carried weight on different soil conditions in order to avoid excessive soil compaction.