CFS announces results of seasonal food surveillance on rice dumplings (second phase)

The Centre for Food Safety (CFS) of the Food and Environmental Hygiene Department today (May 22) announced the results of a recently completed seasonal food surveillance project on rice dumplings (second phase). Except for a loose-packed "gan shui" rice dumpling sample found to contain boric acid, a preservative not permitted in food, which was taken for testing during a follow-up investigation and announced earlier, the test results of some 60 samples collected were satisfactory.

"The CFS announced the results of the seasonal food surveillance project on rice dumplings (first phase) last month. With the Tuen Ng Festival around the corner, the CFS has completed the second phase of the surveillance project. Samples of rice dumplings from different food premises such as restaurants, food factories and other retail outlets were collected for chemical, microbiological and nutrition content analyses. The chemical analyses included tests for colouring matters (such as Sudan dyes and red 2G), preservatives (such as boric acid, salicylic acid and benzoic acid), metallic contamination (such as lead, arsenic, cadmium, mercury and copper) and pesticides. The microbiological analyses covered pathogenic bacteria including Salmonella, coagulase-positive staphylococci organisms, Clostridium perfringens and Bacillus cereus. For nutrition content analyses, contents of energy, carbohydrates, protein, total fat, saturated fatty acids, trans fatty acids, sodium and sugars of the samples were tested to see if the test results comply with their declared values on the nutrition labels," a spokesman for the CFS said.

The spokesman reminded members of the public to observe the following food safety tips in purchasing, preparing, storing and consuming rice dumplings:

Buying rice dumplings
* Buy rice dumplings from reputable retail outlets;
* When purchasing non-prepackaged rice dumplings, choose those that are securely wrapped in wrapping leaves; and
* When purchasing prepackaged rice dumplings, check the expiry date and whether the packaging is intact.

Home-made rice dumplings
* Buy wrapping leaves from reputable suppliers and avoid leaves that are unnaturally bright green or with chemical smells; and
* Choose healthier ingredients as fillings (e.g. dry beans, lean meat and mushrooms) by following the "3 Low 1 High" dietary principle of low fat, low sugar, low salt and high fibre.

Storing and preparing rice dumplings
* Consume rice dumplings as soon as possible and avoid prolonged storage;
* Store rice dumplings at 4 degrees Celsius or below, or store them properly according to the instructions on the package;
* Keep cooked rice dumplings that are not consumed immediately in a covered container and put them in the upper compartment of the refrigerator. Keep raw food in the lower compartment to prevent cross-contamination;
* Reheat rice dumplings thoroughly until the core temperature reaches 75 degrees C or above before consumption;
* Do not reheat leftover rice dumplings more than once; and
* Consume reheated rice dumplings as soon as possible.

Consuming rice dumplings
* Before eating rice dumplings, wash hands with running water and liquid soap and dry them with a dry towel or paper towel; and
* Limit seasonings such as soy sauce or granulated sugar added to rice dumplings during consumption.

The spokesman said, "Rice dumplings in general are relatively high in energy, fat and salt. During the festival, people should maintain a balanced diet, and consume rice dumplings moderately, with due consideration of their health condition. People are recommended to share rice dumplings with their family members and friends, as this not only enhances the festive atmosphere, but also allows them to taste rice dumplings of different flavours and avoid over-consumption. People are also advised to make use of nutrition labels on prepackaged food to compare their nutritional contents for healthier food choices, such as rice dumplings with lower sodium, sugar and fat contents."

He also reminded food manufacturers to purchase food ingredients from reputable suppliers, adhere to Good Manufacturing Practice for preparation of food products, and comply with relevant legal and regulatory requirements (including the use of food additives).

Members of the public can visit the CFS website ( for more food safety tips.

Ends/Monday, May 22, 2017