Announcement of tea testing results according to the latest criteria in 2021
1. Why publish tea test results?
Testing tea to announce quality standards is an extremely important job that must be done for businesses that want to do business in the production of tea of all kinds in order to do business legally and introduce necessary information to customers.
According to regulations, in Vietnam, all teas produced, processed domestically, or imported must meet food safety conditions. Before being circulated on the market, tea products must apply for a license to announce test results of tea according to quality standards issued by the Department of Health.
According to Decision No. 46/2007/QD-BYT issued on February 19, 2007, providing for the maximum limit of biological and chemical contamination in food, tea testing is mandatory in the process of testing. processing, production as well as before the product is put on the market. Accordingly, before conducting the announcement of tea materials, the entire process of tea production, processing, packaging, or import must be tested to announce the "test results" that meet the standards and every 6 months must be carried out. carry out periodic food testing once.
On the other hand, based on the "test results" will help you properly assess and promptly recognize errors, control production in the predetermined direction in terms of using raw materials, processes, operations as well as finding out raw materials. personnel for timely remedial; help businesses find ways to improve product quality, adjust and optimize production processes to perfect products, ensure nutritional quality and food safety.
2. Announcement of tea test results according to current standards
In Vietnam, tea testing results will be performed according to the criteria specified by the following national standards:
- TCVN 9740: 2013 – National standard for green tea
- TCVN 1454:2013 – National standard for black tea
- TCVN 7974:2008 – National standard for tea bags
- TCVN 7975:2008 - National standard for herbal tea in filter bags.
In particular, each different tea will be tested according to different criteria:
2.1 The criteria for announcing test results related to green tea quality standards:
|
CRITERIA |
REQUIREMENT |
|
General requirements for appearance |
Clean tea, no impurities |
|
Sensory |
No unpleasant odor, meets the appearance, color, and taste of green tea (specified in TCVN 5086). |
|
CHEMICAL CRITERIA |
|
|
Extract in water, percent by mass, min |
|
|
Ash mass (as a percentage by weight) |
Maximum ash mass < 8% Minimum ash mass >4% |
|
Mass of ash dissolved in water (as a percentage by weight) |
Mass percent of total ash, min 45% |
|
Alkalinity of water-soluble ash (in KOH), mass percent |
Minimum amount 1% Maximum amount 3% |
|
Ash insoluble in acid |
Up to 1% |
|
Crude fiber weight |
Up to 16.5% |
|
Mass of Catechin |
7% minimum |
|
Mass of Polyphenols |
11% minimum |
2.2 The criteria for announcing test results related to black tea quality standards:
|
CRITERIA |
REQUIREMENT |
|
General requirements for appearance |
Clean tea, no impurities |
|
Sensory |
No unpleasant odor, meets the appearance, color, and taste of green tea (specified in TCVN 5086). |
|
CHEMICAL CRITERIA |
|
|
Extract in water, percent by mass, min |
Not less than 32% |
|
Ash mass (as a percentage by weight) |
Maximum ash mass < 8% Minimum ash mass >4% |
|
Mass of ash dissolved in water (as a percentage by weight) |
Mass percent of total ash, min 45% |
|
Alkalinity of water-soluble ash (in KOH), mass percent |
Minimum amount 1% Maximum amount 3% |
|
Ash insoluble in acid |
Up to 1% |
|
Crude fiber weight |
Up to 16.5% |
|
Mass of Polyphenols |
9% minimum |
2.3 The criteria for announcing test results related to teabag quality standards:
Sensory parameters:
|
NAME OF CRITERIA |
Green tea in a filter bag |
Black tea in a filter bag |
|
Water color after making tea |
Green, yellow-green, yellow depending on the material area |
Red-brown to reddish-brown, typical for the raw material area |
|
Scent |
Characteristic of tea |
Characteristic of tea |
|
Flavor |
Bitter, mild, sweet aftertaste |
Strong taste characteristic |
Chemical and physical criteria:
|
CRITERIA |
Green tea in a filter bag |
Black tea in a filter bag |
|
Extract in water, as a percentage by mass |
Greater than 32% |
Greater than 30% |
|
Moisture, as a percent by mass |
Less than 9% |
Less than 9% |
|
Total ash content, as a percent by mass |
About 4-8% |
About 4-8% |
|
Acid-insoluble ash content, as a percent by mass |
Less than 1% |
Less than 1% |
|
Crude fiber weight, as a percent by mass |
Less than 16,5% |
Less than 16,5% |
The requirements for the maximum heavy metal content:
|
NAME OF METAL |
MAXIMUM |
|
1. Asen, mg/kg |
1,0 |
|
2. Cadimi, mg/kg |
1,0 |
|
3. Lead (Pb), mg/kg |
2,0 |
|
4. Mercury (Hg), mg/kg |
0,05 |
Requirements for the maximum amount of microorganisms:
|
NAME OF MICROORGANISMS |
MAXIMUM |
|
1. Total aerobic microorganisms, bacteria/gram product |
1 x 105 |
|
2. Coliform, lactobacilli/gram of product |
1 x 103 |
|
3. Yeast, lactobacilli/gram of product |
1x 104 |
|
4. Mold, lactobacilli/gram of product |
1 x 104 |
|
5. Salmonella, lactobacilli/25gram of product |
Not allowed |
Requirements on the maximum level of pesticide residues:
|
PLANT PROTECTION DRUGS |
MAXIMUM |
|
1. Chlorpyrifos- methyl, mg/kg |
0,1 |
|
2. Cypermetrom. mg/kg |
20 |
|
3. Flenitrothion, mg/kg |
0,5 |
|
4. Flucythrinate, mg/kg |
20 |
|
5. Methidathion, mg/kg |
0,5 |
|
6. Permethrin, mg/kg |
20 |
|
7. Propargite, mg/kg |
5 |
2.4. The criteria for announcing the test results related to the quality standards of herbal tea bags:
Sensory requirements:
|
CRITERIA |
Herbal tea bags |
|
Water color after making tea |
Characteristic color with each herb |
|
Scent |
Characteristic scent with each herb |
|
Flavor |
Characteristic flavor with each herb |
Chemical and physical criteria:
|
CRITERIA |
Green tea in a filter bag |
|
Moisture, as a percent by mass |
Less than 10% |
|
Total ash content, as a percent by mass |
Less than 8% |
|
Acid-insoluble ash content, as a percent by mass |
Less than 1% |
The requirements for the maximum heavy metal content:
|
NAME OF METAL |
MAXIMUM |
|
1. Asen, mg/kg |
1,0 |
|
2. Cadimi, mg/kg |
1,0 |
|
3. Lead (Pb), mg/kg |
2,0 |
|
4. Mercury (Hg), mg/kg |
0,05 |
Requirements for the maximum amount of microorganisms:
|
NAME OF MICROORGANISMS |
MAXIMUM |
|
1. Total aerobic microorganisms, bacteria/gram product |
1 x 106 |
|
2. Coliform, lactobacilli/gram of product |
1 x 103 |
|
3. Yeast, lactobacilli/gram of product |
1x 104 |
|
4. Mold, lactobacilli/gram of product |
1 x 104 |
|
5. Salmonella, lactobacilli/25gram of product |
Not allowed |
Requirements on the maximum level of pesticide residues:
|
PLANT PROTECTION DRUGS |
MAXIMUM |
|
Chlorpyrifos- methyl, mg/kg |
0,1 |
|
Cypermetrom. mg/kg |
20 |
|
Flenitrothion, mg/kg |
0,5 |
|
Flucythrinate, mg/kg |
20 |
|
Methidathion, mg/kg |
0,5 |
|
Permethrin, mg/kg |
20 |
|
Propargite, mg/kg |
5 |
3. Announcement of tea test results at Eurofins Sac Ky Hai Dang
Eurofins Sac Ky Hai Dang has over 10 years of testing capacity, in which testing and publishing test results tea is one of many services that receive absolute satisfaction from customers.
Eurofins Sac Ky Hai Dang has a local advantage with a team of seasoned experts, the laboratory system of Eurofins group operates in 47 countries and is present in 3 key regions of Vietnam: Hanoi, TP. Ho Chi Minh City, Can Tho in order to give quick and accurate results, helping to save the lowest cost for customers. The results achieved are many prestigious "certificates" published annually and the trust and choice of customers.
In addition, during the Lunar New Year to spring, in order to express our gratitude to customers and partners for trusting and choosing to use the company's services during the past year, from January 1, 2021, to January 30, 2020. 03/2021 Eurofins Sac Ky Hai Dang implements a PROMOTION program for Pesticide Residue in Tea to support tea and agricultural product exporters with many attractive incentives.
Hotline:(+84) 28 7107 7879
Contact for quotation: (+84) 28 7107 7879 – Press 1 (Sales Department)
Email: VN_CS@eurofins.com