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Articles by K. Boontiang
Total Records ( 4 ) for K. Boontiang
  P. Chutichudet , B. Chutichudet and K. Boontiang
  The siam tulip is a relatively new exported cut flower that has become widely recognized for its attractive colorful pink bract. The main problem limiting this lovely flower’s value is its poor vase life after cutting. The objective of this study was to extend siam tulip’s shelf life by using a substance against ethylene action, 1-Methylcyclopropene (1-MCP). The experiment was arranged in a factorial completely randomized design, composed of two factors: 1-MCP concentration at four levels (0, 300, 600 or 900 ppb) and a period of fumigation at two levels (4 or 8 h) in a hermetically sealed plastic bucket (50 L) at 25°C. The results showed that flowers treated with 300 ppb 1-MCP for 8 h had maximal water uptake, preserved the highest anthocyanin content and the least occurrence of bract browning during postharvest life. No marked differences in weight loss of flowering stalk was observed.
  P. Chutichudet , B. Chutichudet and K. Boontiang
  Patumma is one of the most popular exported cut flowers in Thailand due to its attractive large pink bracts. Its export value, however is limited because of its poor vase life. The objective of this research was to extend patumma’s shelf life by using a substance against ethylene action, 1-Methylcyclopropene (1-MCP). The experiment was arranged in a Factorial in Completely Randomized Design, composed of two factors : 1-MCP concentration at three levels (0, 100 and 300 ppb) with period of fumigation at two levels (12 and 15 h) in a hermetically sealed plastic bucket (50 L) at 20°C. Afterwards, the treated and untreated flower stems were dipped in a plastic bottle filled with distilled water and stored in ambient temperature (27°C, 91% RH). Weight loss of flowering stalk, water uptake by flowering stem, vase life, anthocyanin content and bract colour were recorded every other day at ambient temperature. The results showed that flowers treated with 300 ppb of 1-MCP for 15 h had the least weight loss of the flowering stem and preserved the highest anthocyanin content at 8 DAV. For water uptake by the flowering stem, flowers treated with 100 ppb of 1-MCP for 12 h gave the highest water uptake from six to ten days after vase life (DAV), while the maximal vase life (10.25 days) of flowers treated with 100 ppb of 1-MCP for 12 h was observed. For bract colour, the results showed that treatment with 100 ppb of 1-MCP for 15 h gave the maximal L* and a* values at 12 DAV.
  Chomdao Khumjing , B. Chutichudet , P. Chutichudet and K. Boontiang
  This study was aimed at evaluating the effect of different calcium formulas with various concentration rates on leaf color, contents of phenolic compounds and quinone, Polyphenol oxidase (PPO) activity and browning percentage in Grand Rapids lettuce. A Factorial in Completely Randomized Design was arranged with four replications and composed of two factors: three forms of calcium in terms of calcium chloride (CaCl2), calcium nitrate [(Ca(NO3)2] or calcium oxide (CaO) by soil dressing application with five concentrations (0, 0.5, 1.0, 1.5 or 2.0%). The results showed that plants-treated with 1.5% CaCl2 had the maximal leaf color in term of greenness (a*) values, while treatment of 2% CaCl2 had the lowest contents of phenolic compounds, quinone and activity of Polyphenol oxidase (PPO) which corresponded to the least browning level at harvesting stage.
  P. Chutichudet , B. Chutichudet and K. Boontiang
  The objective of this study was to extend patummas shelf life by using a substance against ethylene action, 1-Methylcyclopropene (1-MCP). The experiment was arranged in a Factorial in completely randomized design, composed of two factors : 1-MCP concentration at four levels (0, 300, 600 or 900 ppb) and period of fumigation at two levels (4 or 8 h) in a hermetically sealed plastic bucket (50 L) at 25°C. Afterwards, the treated and untreated flower stems were dipped in a plastic bottle filled with distilled water and stored in ambient temperature (27.5°C, 91% R.H.). Each treatment consisted of 10 replicates, one flower per replication. The experiment was carried out from June to August, 2008 at the laboratory of the Division of Agricultural Technology, Faculty of Technology, Mahasarakham University, in the Northeast of Thailand. The results showed no obvious differences in shelf life, except that the flower-treated with 600 ppb of 1-MCP for 8 h had the least storage life of 6.40 days. Treatment with 1-MCP had no effect on water uptake, rot appearance and wilting percentage. In addition, flower-treated with 1-MCP at 600 and 900 ppb for 4 and 8 h retained a higher content of anthocyanin by 26.57 and 16.32 mg/100 g Fresh Weight (FW) by 4 and 10 days after vase life (DAV), respectively.
 
 
 
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