Decision No. 57/2002/QĐ-BNN on issuing industry standards

DECISION

Regarding the issuance of industry standards

 THE MINISTER OF AGRICULTURE AND RURAL DEVELOPMENT

Pursuant to Decree No. 73/CP dated November 1, 1995 of the Government stipulating the functions, tasks, powers, and organizational structure of the Ministry of Agriculture and Rural Development;

Pursuant to Decree No. 86/CP dated December 8, 1995 of the Government on the division of responsibilities for state management of product quality;

Considering the proposal of the Director of the Science, Technology and Product Quality Department.

 

DECISION:

Article 1. Now promulgates the following industry standard:

10TCN 529-2002: Black Tea - Determining sensory criteria by scoring method from 2.25 to 3.75

Article 2. This Decision takes effect 15 days from the date of signature

Article 3. The Heads of the Office, Directors of the Science, Technology and Product Quality Department, Leaders of relevant organizations and individuals are responsible for implementing this Decision.

Standard for black tea - determining sensory criteria by scoring method from 2.25 to 3.75 points BLACK TEA Sensory analysis by presenting mark scope from 2.25 to 3.75 10TCN 529 - 2002 Issued together with Decision No. 57/2002-QĐ-BNN-KHCN dated June 24, 2002

1. Scope of application This standard applies to the evaluation of sensory criteria of loose black tea produced by traditional methods.

2. General provisions Testing, weighting factors, and quality classification shall be carried out in accordance with TCVN 3218 - 1993.

3. Scoring sensory criteria

3.1. This standard uses point 3 of TCVN 3218 - 1993 as the reference.

3.2. Four sensory criteria: Appearance of dry tea leaves, color of brewed tea, aroma, and taste are evaluated separately using scales from 2 to 4, with each scale divided into increments of 0.25, where adjacent levels differ by 0.25 points.

4. Points for each criterion The points for each criterion are described in Appendices 1, 2, 3, 4, 5, 6, and 7.

Appendix 1: Black Tea OP

 

Criteria Points

3,75

3,5

3,25

3,0

2,75

2,5

2,25

Appearance

Curled, uniform, firm, naturally dark, abundant frost

Curled, uniform, naturally dark, abundant frost

Curled, relatively uniform, naturally dark, some frost

Curled, relatively uniform, naturally dark, slight frost

Maximum two of the following characteristics: - Relatively curled - Slightly pale - Slightly brownish - Slightly dark brown - Slightly mixed types Maximum two of the following characteristics: - Less curled - Pale - Slightly exposed brownish-black - Slightly mixed types Maximum two of the following characteristics: - Poorly curled - Exposed brownish-black - Mixed types

Color of Brewed Tea

Bright red-brown, fairly thick, relatively attractive, clear yellow rim

Bright red-brown, fairly thick, clear yellow rim

Bright red-brown, relatively thick, clear yellow rim

Bright red-brown, clear yellow rim

Red-brown, with yellow rim

Darker red-brown

Very dark red-brown

Aroma

Rich, well-balanced, appealing

Rich, appealing

Rich, relatively appealing

Rich

Lightly rich; with one of the following characteristics: - Slightly smoky - High-fired - Slightly spicy Maximum two of the following characteristics: - Slightly off - Exposed high-fired - Slightly old - Slightly strange smell

Taste

Rich, smooth, clear aftertaste, well-balanced

Rich, smooth, clear aftertaste, relatively well-balanced

Rich, smooth, clear aftertaste

Rich, clear aftertaste

Less rich, smooth

Less rich, smooth; with one of the following defects: - Slightly smoky - High-fired - Weak Maximum two of the following characteristics: - Slightly off - Exposed high-fired - Slightly old - Strange taste

 

Appendix 2: Black Tea FBOP

Currency Exchange Agent No. 1

Criteria

3,75

3,5

3,25

3,0

2,75

2,5

2,25

Appearance

Small, broken pieces of OP and P, uniform, dark, firm, abundant frost

Small, broken pieces of OP and P, uniform, dark, abundant frost

Small, broken pieces of OP and P, relatively uniform, dark, relatively abundant frost

Small, broken pieces of OP and P, relatively uniform, dark, some frost

Maximum two of the following characteristics: - Less BOP - Slightly pale - Slightly light fragments - Slightly brownish-black Maximum two of the following characteristics: - Slightly coarse - Slightly exposed light fragments - Slightly mixed types - Slightly exposed brownish-black Maximum two of the following characteristics: - Mixed types - Slightly impurities - Exposed brownish-black - Slightly red stem - Small - Coarse - Exposed light fragments

Color of Brewed Tea

Red-brown, relatively bright, thick, clear yellow rim

Darker red-brown, thick, yellow rim

Darker red-brown, relatively thick, yellow rim

Very dark red-brown, yellow rim

Darker red-brown

Very dark red-brown

Brown

Aroma

Rich, well-balanced, appealing

Rich, appealing

Rich, relatively appealing

Rich

Lightly rich

Less rich; with one of the following characteristics: - Slightly smoky - High-fired - Slightly spicy Maximum two of the following characteristics: - Slightly off - Exposed high-fired - Slightly old - Slightly strange smell

Taste

Rich,

clear aftertaste,

well-balanced

Rich,

clear aftertaste

Rich,

clear aftertaste

Rich, clear aftertaste

Rich, less clear aftertaste

Rich, less clear aftertaste; with one of the following characteristics: - Slightly smoky - High-fired - Weak Maximum two of the following characteristics: - Slightly off - Exposed high-fired - Slightly old - Strange taste

Appendix 3: Black Tea P

Criteria Points

3,75

3,5

3,25

3,0

2,75

2,5

2,25

Appearance

Curled, relatively uniform, dark, firm, shorter than OP

Curled, relatively uniform, dark, shorter than OP

Relatively curled, uniform, dark, shorter than OP

Relatively curled, relatively uniform, dark, shorter than OP

Maximum two of the following characteristics: - Less uniform - Slightly pale - Slightly brownish-black Maximum two of the following characteristics: - Less curled - Pale - Slightly mixed types - Slightly exposed brownish-black Maximum two of the following characteristics: - Poorly curled - Mixed types - Exposed brownish-black - Slightly impurities

Color

of Brewed Tea

Bright red-brown, fairly thick, clear yellow rim, relatively appealing

Bright red-brown, fairly thick, clear yellow rim

Bright red-brown, relatively thick, yellow rim

Bright red-brown, yellow rim

Red-brown or red-brown with yellow rim

Darker red-brown

Very dark red-brown

Aroma

Mild, well-balanced, appealing

Mild, well-balanced

Mild, relatively well-balanced

Mild

Lightly rich

Less rich; with one of the following characteristics: - Slightly smoky - High-fired - Slightly spicy Maximum two of the following characteristics: - Slightly off - Exposed high-fired - Slightly old - Slightly strange smell

Taste

Rich, clear aftertaste

Rich, relatively smooth, clear aftertaste

Rich, less smooth, clear aftertaste

Rich, smooth

Rich, relatively smooth,

Rich, relatively smooth; with one of the following characteristics: - Slightly smoky - High-fired - Slightly harsh - Weak Rich; with maximum two of the following characteristics: - Slightly off - Exposed high-fired - Slightly old - Slightly harsh - Strange taste

Appendix 4: Black Tea PS

Criteria Points

3,75

3,5

3,25

3,0

2,75

2,5

2,25

Appearance

Uniform, relatively firm, relatively dark

 

Uniform, relatively firm, slightly brownish

Relatively uniform, relatively firm, slightly brownish

Relatively uniform, slightly brownish, slightly coarse, slightly brownish stem

Maximum two of the following characteristics: - Slightly pale - Slightly light stem - Slightly brownish-red Maximum two of the following characteristics: - Light stem - Slightly mixed types - Coarse - Some brownish-red stem Maximum two of the following characteristics: - Mostly light stem - Some mixed types - Slightly exposed brownish-red stem - Slightly impurities

Color of Brewed Tea

Clear red-brown

Bright red-brown

Relatively bright red-brown

Red-brown

Darker red-brown

Very dark red-brown

Darker red-brown

Aroma

Mild, relatively well-balanced, appealing

Mild, relatively well-balanced

Mild, slightly well-balanced

Mild

Lightly mild, slightly smoky

Less mild; with one of the following characteristics: - Slightly smoky - High-fired - Slightly exposed smoky Maximum two of the following characteristics: - Slightly off - Exposed high-fired - Slightly exposed smoky - Slightly strange smell - Slightly old

Taste

Rich, relatively mild

Rich, less mild

Rich, poor mild

Rich, moderate

Rich, moderate, slightly weak

Rich, moderate, slightly weak; with one of the following characteristics: - Slightly off - High-fired - Slightly exposed smoky - Weak Slightly weak; with maximum two of the following characteristics: - Slightly off - Exposed high-fired - Slightly exposed smoky - Strange taste - Slightly old - Weak

Appendix 5: Black Tea BPS

Criteria Points

3,75

3,5

3,25

3,0

2,75

2,5

2,25

Appearance

Uniform, relatively firm, relatively dark

Uniform, relatively firm, slightly brownish

Relatively uniform, relatively firm, slightly brownish

Relatively uniform, broken pieces of PS, dark brownish

Maximum two of the following characteristics:

- Silver coloration

- Light fragments - Slightly hairy strandsPresenting at most 2 of the following characteristics:- Slightly mixed types- Many light fragments- Hairy strandsPresenting at most 2 of the following characteristics:- Mixed types- Mostly light fragments- Exposed hairy strands- Slightly impure

Color Water

Bright red-brown

Relatively bright red-brown

Red-brown

Light brown red

Dark brown red or slightly diluted brown red

Darker brown red or slightly diluted brown red

Very dark red-brown

Aroma

Lightly fragrant, relatively harmonious, attractive

Lightly fragrant, relatively harmonious

Lightly fragrant, slightly harmonious

Lightly rich

Slightly fragrant, slightly musty

Presenting 1 of the following characteristics:- Slightly smoky- High fire- Slightly exposed mustinessPresenting at most 2 of the following characteristics:- Slightly rotten- Exposed high fire- Slightly exposed mustiness- Slightly old- Slightly strange smell

Taste

Rich, less mild

Rich, moderate

Strong smoke aroma

Less strong

Less strong, smoky

Presenting 1 of the following characteristics:- Slightly smoky- High fire- Slightly exposed mustiness-Slightly palePresenting at most 2 of the following characteristics:- Slightly rotten- Exposed high fire- Slightly exposed mustiness- Slightly old- Slightly strange taste- Pale

Appendix 6: Black tea f

 

Criteria Points

3,75

3,5

3,25

3,0

2,75

2,5

2,25

Appearance

Small, uniform, clean, relatively heavy, relatively black

Small, uniform, clean, slightly heavy, blackish brown

Small, uniform, clean, blackish brown

Small, uniform, blackish brown

Presenting at most 2 of the following characteristics:- Slightly light- Silver coloration- Slightly hairy strandsPresenting at most 2 of the following characteristics:- Slightly light- Slightly mixed types- Slightly exposed hairy strandsPresenting at most 2 of the following characteristics:- Light- Reddish brown color- Mixed types- Exposed hairy strands- Slightly impure

Color of Brewed Tea

Red-brown

Darker red-brown

Relatively dark brown red

Very dark red-brown

Darker brown red or slightly diluted dark brown red

Dark brown red or diluted dark brown red

Brown

Aroma

Lightly fragrant, relatively harmonious and attractive

Lightly fragrant, relatively harmonious

Lightly fragrant, slightly harmonious

Lightly rich

Slightly fragrant; presenting 1 of the following characteristics:- Slightly smoky- Slightly mustySlightly fragrant; presenting 1 of the following defects:- Slightly rotten- High fire- Slightly exposed mustinessPoorly fragrant; presenting at most 2 of the following characteristics:- Slightly exposed rotten smokiness- Exposed high fire- Exposed mustiness- Slightly old- Slightly strange smell

Taste

Rich, relatively mild

Strong, slightly astringent

Strong

Strong, slightly astringent

Strong, slightly smoky; presenting 1 of the following characteristics:- Slightly smoky- Slightly mustyRelatively strong, smoky; presenting 1 of the following characteristics:- Slightly rotten- High fire- Slightly exposed mustiness- PaleSlightly pale, smoky; presenting at most 2 of the following characteristics:- Slightly exposed rotten smokiness- Exposed high fire- Exposed mustiness- Slightly old- Slightly strange taste- Pale

 

 Appendix 7: Black tea Dust

Criteria Points

3,75

3,5

3,25

3,0

2,75

2,5

2,25

Appearance

Small, fine, clean, relatively heavy, dark brown

Small, fine, clean, relatively heavy, brown

Small, fine, clean, slightly heavy, brown

Small, fine, clean

Presenting at most 2 of the following characteristics:- Slightly mixed types- Slightly light- Slightly hairy strandsPresenting at most 2 of the following characteristics:- Slightly mixed types- Light- Hairy strandsImpurePresenting at most 2 of the following characteristics:- Mixed types- Exposed hairy strands- Impurities

Color of Brewed Tea

Darker red-brown

Relatively dark brown red

Very dark red-brown

Darker red-brown

Very dark red-brown

Brown

Dark brown

Aroma

Lightly fragrant, relatively harmonious, attractive

Lightly fragrant, relatively harmonious

Lightly fragrant, slightly harmonious

Lightly rich

Slightly fragrant; presenting 1 of the following characteristics:- Slightly smoky- Slightly mustyPresenting 1 of the following characteristics:- Slightly rotten smoky- High fire- Slightly exposed pungent mustiness- Slightly strange smell.Presenting at most 2 of the following characteristics:- Slightly exposed rotten smokiness- Exposed high fire- Exposed mustiness- Slightly old- Slightly strange smell