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News >> Knowledge of testing industry >> ANNOUNCEMENT OF TEA TESTING RESULTS ACCORDING TO THE LATEST CRITERIA

Announcement of tea testing results according to the latest criteria

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.

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:

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

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

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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
Color of water 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.Arsenic, 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
Fenitrothion, mg/kg	0,5
Flucythrinate, mg/kg	20
Methidathion, mg/kg	0,5
Permethrin, mg/kg	20
Propargite, mg/kg	5

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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.

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