Hot Water Treatment

Hot water treatment (HWT) entails dipping of freshly harvested fruits in 52-55oC heated water for approximately 10 minutes.

Description and Importance of HWT: 

Role of ACIAR JDF Mango Project

To increase the adherence to fruit quality and phytosanitary standards by hot water treatment (HWT) on mangoes in controlling pest and microbial contaminants, a modular hot water tank was purchased and set-up in the Samal Island Mango Marketing Cooperative's (SIMMCO) "Centralized Sorting/Packinghouse Facility for Mango"  on 22 June 2022. The modular tank was also used for demonstration of HWT during the season-long training last 15 July 2022 and for the Local In-transit Handling Trial and Export simulation studies of the ACIAR JDF Mango Project. This was patented under Eng. Emmanuel Amatorio from the University of Philippines Los Baños.

hot water treatment
A. Engr. Emmanuel Amatorio of UP Los Banosafter setting up the HWT tank. -
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B. Testing of the hot water tank -

Figure 2. Set-up of the modular HWT at the Samal Island Mango Marketing Cooperative (SIMMCO) “Centralized Packing House” last 22 June 2022. (A) Eng. Emmanuel Amatorio (third from right) with the officials of the SIMMCO. (B) Testing of the HWT with Mr. Roberto Mamitag (left), chairman of SIMMCO and Mr. Jimuel Rebigan (right), City Agriculturist, CAGRO.

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Figure 3. Demonstration of hot water tank to different mango stakeholders during the graduation ceremony session of Season-long Training on 15 July 2022.

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Figure 9. Actual usage of hot water tank for local in-transit handling trial and export simulation (HWT at 51-550C for 5 min).

Instruction on how to use:

  1. Fill-up tank with water up to the return hole (mid-way of the hole)
  2. Fill –up water in the water pump
  3. Connect solenoid valve to the digital thermometer
  4. Put the temperature sensor in the water
  5. Plug the water pump and the digital thermometer (digital thermometer is set at 540C)
  6. Turn on the digital thermometer
  7. Open the LPG regulator and set it at 1.0 to 1.25 bar
  8. Lit the pilot light and the burners (should have bluish flame, if not adjust the LPG regulator )
  9. Wait for the temperature to reach 54 degrees before treatment
  10. Temperature of the water is automatically controlled by the digital thermometer (on and off at 1 degree increment)


Hot water tank purchase and contact:

Engr. Emmanuel Amatorio 
Email: eqamatorio@up.edu.ph

Description and Importance of HWT: 

Role of ACIAR JDF Mango Project

To increase the adherence to fruit quality and phytosanitary standards by hot water treatment (HWT) on mangoes in controlling pest and microbial contaminants, a modular hot water tank was purchased and set-up in the Samal Island Mango Marketing Cooperative's (SIMMCO) "Centralized Sorting/Packinghouse Facility for Mango"  on 22 June 2022. The modular tank was also used for demonstration of HWT during the season-long training last 15 July 2022 and for the Local In-transit Handling Trial and Export simulation studies of the ACIAR JDF Mango Project. This was patented under Eng. Emmanuel Amatorio from the University of Philippines Los Baños.

hot water treatment
A. Engr. Emmanuel Amatorio of UP Los Banosafter setting up the HWT tank. -
hwt2
B. Testing of the hot water tank -

Figure 2. Set-up of the modular HWT at the Samal Island Mango Marketing Cooperative (SIMMCO) “Centralized Packing House” last 22 June 2022. (A) Eng. Emmanuel Amatorio (third from right) with the officials of the SIMMCO. (B) Testing of the HWT with Mr. Roberto Mamitag (left), chairman of SIMMCO and Mr. Jimuel Rebigan (right), City Agriculturist, CAGRO.

hwt3
-

Figure 3. Demonstration of hot water tank to different mango stakeholders during the graduation ceremony session of Season-long Training on 15 July 2022.

hwt3
-

Figure 9. Actual usage of hot water tank for local in-transit handling trial and export simulation (HWT at 51-550C for 5 min).

Instruction on how to use:

  1. Fill-up tank with water up to the return hole (mid-way of the hole)
  2. Fill –up water in the water pump
  3. Connect solenoid valve to the digital thermometer
  4. Put the temperature sensor in the water
  5. Plug the water pump and the digital thermometer (digital thermometer is set at 540C)
  6. Turn on the digital thermometer
  7. Open the LPG regulator and set it at 1.0 to 1.25 bar
  8. Lit the pilot light and the burners (should have bluish flame, if not adjust the LPG regulator )
  9. Wait for the temperature to reach 54 degrees before treatment
  10. Temperature of the water is automatically controlled by the digital thermometer (on and off at 1 degree increment)


Hot water tank purchase and contact:

Engr. Emmanuel Amatorio 
Email: eqamatorio@up.edu.ph