Refined Sunflower Seed Oil Specification

TZS 50:2011

ICS: 67.220.10

TANZANIA STANDARD

Refined sunflower seed oil – Specification

TANZANIA BUREAU OF STANDARDS

TZS 50:2011

This Tanzania Standard was published under the authority of the Board of Directors of Tanzania Bureau of Standards on 2011-01-25.

Tanzania Bureau of Standards (TBS) is the statutory National Standards Body for Tanzania, established under the Standards Act No.3 of 1975, repealed and replaced by Act No.2 of 2009.

The Agriculture and Food Divisional Standards Committee under whose supervision this Tanzania Standard was prepared consists of representatives from the following organizations:

Sokoine University of Agriculture (SUA)

Ministry of Agriculture, Food Security and Cooperatives

*Tanzania Food and Drugs Authority (TFDA)

*Tanzania Food and Nutrition Centre (TFNC)

*United Nations Industrial Development (UNIDO)/ Small Industries Development Organizations (SIDO)

Tanzania Revenue Authority – Customs Department

Biashara Consumers Services Limited

Government Chemist Laboratory Agency (GCLA)

The organizations marked with an asterisk (*) in the above list together with the following were directly represented in the Technical Committee entrusted with the preparation of this Tanzania Standard:

Tanzania Industrial Research and Development Organization (TIRDO)

BIDCO Oils and Soap Limited

East Coast Oil and Fats Limited

Vegetable Oil Industries Limited (VOIL)

Tanzania Bureau of Standards

P O Box 9524

Dar es Salaam

Tel: 022 2450206/2450298/2450949

Fax: 022 2450959

E-mail:

ISBN: 978-9987-11-212-8

TANZANIA STANDARD TZS 50:2011

Refined sunflower seed oil – Specification

0 Foreword

This Tanzania Standard prescribes the requirements and the methods of sampling and test for refined sunflower seed oil. This Tanzania Standard will guide producers, exporters and importer in achieving the edible oil safety and quality fit for human consumption.

In the preparation of thisTanzania Standard considerable help was derived from:

IS 3491: 1965(Reaffirmed 2004)sunflower seed oil specification,published by Bureau of Indian Standards

In reporting the results of a test or analysis made in accordance with this standard, if the final value, observed or calculated is to be rounded off, it shall be done in accordance with TZS 4.

1 Scope

This Tanzania Standard prescribes the requirements and the methods of sampling and test for refined sunflower seed oil.

2 Reference

For the purpose of this Tanzania Standard the following references shall apply:

TZS 4: 2010, Rounding off numerical values

TZS 54:2010,Animal and Vegetablefats and oils –Sampling

TZS 1322:2010,Oils and fats Sampling and test methods –Purity tests

TZS 76: 1980,Methods for determination of arsenic

TZS 268: 1986,General atomic absorption – Spectro – Photometric method for determination of lead in food stuffs

TZS 538: 1999, Packaging and labeling of foods

TZS 1324:2010,Animal and vegetable fats and oils – Determination ofperoxide value-Iodometric (visual) end point determination

TZS 1325:2010,Animal and vegetable fats and oils – Determination ofsaponification value

TZS 1326:2010,Animal and vegetable fats and oils – Determination ofmoisture and volatile matter

TZS 50:2011

TZS 1327:2010,Animal and vegetable fats and oils – Determination ofiodine value

TZS 1328:2010,Essential oils – Determination ofrelative density at 200c – Reference method

TZS 1329:2010,Animal and vegetable fats and oils – Determination ofrefractive index

TZS 1330:2010,Animal and vegetable fats and oils – Determination oflovibond colour

TZS 1331:2010,Animal and vegetable fats and oils – Determination ofacid value and acidity

TZS 1332:2010,Animal and vegetable fats and oils – Determination ofunsaponifiable matter-method using diethyl ether extraction

TZS 1335:2010,Animal and vegetable fats and oils – Determination ofcopper, iron and nickel content-graphite furnace atomic absorption

TZS 1336:2010,Animal and vegetable fats and oils – Determination ofinsoluble impurities content

3 Terminology

For the purpose of this TanzaniaStandard the following definitions shall apply:

3.1Refined sunflower seed oil

Sunflower seed oil obtained by the process of expression or solvent extraction which has been neutralized with alkali, washed with water, dried, bleached with bleaching earth or activated carbon or both, and deodorized with steam, no other chemical agent except citric acid being used.

3.2 Raw sunflower Seed oil

Sunflower seed oil obtained' by a process of mechanical expression and/or solvent extraction.

3.3 Food additive

Any substance not normally consumed as food by itself and not normally used as a typical ingredient of refined sunflower seed oil whether or not it has nutritive value, the intentional addition of which to refined sunflower seed oil for technological (including organoleptic) purposes in the manufacture, processing, preparation, treatment, packing. packaging, transport or holding of such refined sunflower seed oil results, or may be reasonably expected to result (directly or 'indirectly) in it or its product becoming a component of or otherwise affecting the characteristic of such oil the term does not include contaminants or substances added to refined sunflower seed oil for maintaining or improving nutritional qualities.

3.4 Contaminant

refers to the presence of any harmful substance such as chemicals in refined sunflower seed oil not intentionally added to that oil, which is present in such refined sunflower seed oil as a result of production including sunflower husbandry,manufacture, processing, treatment, packing, packaging, transport or holding of such refined sunflower seed oil or as a result of environmental contamination which can cause consumer illness. The term does not include insect fragments, rodent hairs and other extraneous matter.

4 Types and grades

4.1 Sunflower seed oil shall be of the following types and grades;

4.1.1 Expressed type

al Raw grade, and

bl Refined grade

4.1.2 Solvent extracted type

a)Raw grade, and

b) Refined grade.

4. 2 Only refined grade of both expressed and solvent extracted type are suitable for direct edible consumption.

5 Requirements

5.1 Description

Sunflower seed oil shall be obtained from good sunflower seed cake or from undamaged, mature sunflower seeds of the species Helianthus annuus Linnaeus of a family Compositae,by a process of expression and or solvent extraction.

Solvent extracted sunflower seed oilshall be obtained from the oleaginous material using food grade solvent hexane.

5.2 Refined sunflower seed oil shall be clear and free from rancidity, sediments, suspended and other foreign matter, separated water, toxic, colouring and flavouring substances.

The clarity of the product shall be judged by the absence of turbidity after keeping the filtered sample at 30°C for 24 hours.

5.3 Admixture with other oils

The material shall be free from admixture with other oils when tested according to the methods prescribed in TZS 1322(see clause 2)

5.4 Admixture with additives

Refined sunflower seed oil for edible purpose shall contain antioxidants and antioxidant synergists in levels specified in table 1.

Table1 -Requirements of antioxidant and antioxidants synergists for edible refined sunflower seed oil

Characteristicsscs / Level of use
Antioxidant
a} Ascorbyl palmitate or
ascorbyl stearate,
individually or in
combination mg/kg, max. / 200
b} Natural and synthetic
tocopherol / GMP
Antioxidants synergists
Citric acid and its sodium
and potassium salts / GMP

NOTE – As there are no suitable and easily workable methods for determining the contents in table 1, in the product, under good manufacturing practice, the manufacturer would be required to maintain a record showing the quantities added to each batch.

5.5 Contaminants

Refined sunflower seed oil for edible purpose shall comply with requirements for contaminants not to exceed maximum limits prescribed in table 2.

No precipitate of polybromides shall form when refined sunflower seed oil is tested by the method described in annex A.

5.6 Essential composition

Refined sunflower seed oil shall also comply with the requirementsfor essential composition given in table 3.

Table 2 – Acceptable levels of contaminants in edible refined sunflower seed oil

Characteristics / Maximum level / Method of test (see clause 2)
Moisture and volatile Matter at 105°C per cent, m/m
Insoluble impurities, per cent, m/m
Soap content per cent, mlm
Iron (Fe) mg/kg
Copper (Cu) mg/kg
Lead (Pb) mg/kg
Arsenic (As) mg!kg / 0.2
0.05
0.005
1. 5
0.1
0.1
0.1 / TZS 1326:2010
TZS 1336:2010
TZS 1322:2010 Clause 16
TZS 1335:2010
TZS 1335:2010
TZS 268: 1986
TZS 76: 1980

6Packaging, marking and labeling

6.1 Refined sunflower seed oil shall be supplied in sound, clean, dry, new and non-absorbent containers which have not been used for any other purpose and upon which the sunflower seed oil has no action. Containers shall be stored in a clean and sanitary manner and shall not cause any alteration to refined sunflower seed oil. Containers shall be free of any products that may lead to contamination and alter the quality, composition, odour and taste of refined sunflower seed oil. Containers shall protect the product from light. Containers shall preclude contamination with or proliferation of micro-organisms into the refined sunflower seed oil during storage and transportation. Containers shall be air-tight and shall be provided with tamper-proof seals and closures,

6.2 Metallic containers

Metallic containers shall be of iron adequately tinned or enamelled or coated internally With resistant lacquer or enamel or aluminium. Containers of capacity of more than 100 litres shall be bound by hoops or provided with moulded ribs. Their closures shall be threaded to provide tight joints. Stoppers and necks of containers of more than 100 Iitres shall have holes to allow for the passage of wires to bear seals.

6.3 Glass containers

Coloured glass (amber or brown) containers shall be used.

6.4 Plastic containers

Plastic containers or containers lined with a plastic material may be used to contain refined sunflower seed oil provided they conform to the requirements in 6.1.

6.5 Closures

Rubber stoppers shall not be used to close refined sunflower seed oil. New good quality corks, metallic crown corks or glass stoppers or plastic screw lids; shall be used to seal glass and plastic containers of refined sunflower seed oil. New corks and tinned-screw stopper shall be used to close tinned containers. The surface of the closure or stopper in contact with the oil shall be of a material which has no effect on refined sunflower seed oil.

The surface of the closure in contact with the oil shall be of a material which has no effect on the oil

6.6 Filling

Head space of at least five per cent of the capacity of the container shall be left at the top.

6.7 Containers of refined sunflower seed oil shall be legibly and indelibly marked with the following information:

a)Name of the product (Refined sunflower seed oil)

b)Name, physical and postal address of the manufacturer and/or packer

c)Date of manufacture and expiry date

d)Labeled in Swahili with addition of second language depending on the designated market

e)A complete list of ingredients in descending order of proportion

f)Net content

g)Batch number

h)Manufacturers registered trade mark

i)Country of origin

6.8 Refined sunflower seed oil shall be packed, marked and labeled in accordance with TZS 538 (see clause 2)

6.9 The containers shall also be marked with the TBS Standards Mark of Quality.

NOTE – The TBS Standards Mark of Quality may be used by the manufacturers only under licence from TBS. Particulars of conditions under which the licences are granted, may be obtained from TBS.

Table 3 – Requirements for sunflower seed oil

Requirements for types / Method of test refer to clause number
1
2
3
4
5
6
7
8 / Refractive index at 400c
Relative density 200c
Saponification value
Iodine value (Wij)
Peroxide value milliequvalent peroxide oxygen per kg of the oil,max
Acid value, max
Colour in 2.54cm cell on the lovibond scale, expressed as (Y + 5R ) not deeper than
Unsaponifiable matter per cent by mass, max / Expressed / Extracted solvent / TZS 1329:2010
TZS 1328:2010
TZS 1325:2010
TZS 1327:2010
TZS 1324:2010
TZS 1331:2010
TZS 1330:2010
TZS 1332:2010
Refined grade / Raw grade / Refined grade / Raw grade
1.464 to 1.480
0.918 to 0.923
188 to 194
110 to 143
10
0.5
5
1.5 / 3
20
1.5 / 0.5
5
1.5 / 5
25
2.0

7Sampling

7.1Representative samples of the material shall be drawn as prescribedin TZS 54 (see clause 2).

7.2 Size of sample

Samples measuring not less than 400 ml shall be taken in triplicate, preferably from original containers or from the bulk for the purpose of examination. The sample shall be placed in clean, dry, Non absorbent containersupon which the sample has no action, and sealed. The container shall be of such size that they are nearly filled by the sample. Each container so filled by the sample shall be marked with full details and the date of sampling as prescribed in TZS 54 (see clause 2).

8. Tests

Unless specified otherwise, distilled water and pure chemicals shall be used in all tests.

NOTE – Pure chemicals shall mean chemicals that do not contain impurities which affect the results of analysis (chemicals of analytical grade).

Annex A (See 5.5.1)

Tests for absence of polybromides

Procedure

Place 0.5 ml of the oil in a dry test tube. Add 10 ml of a mixture of 28 parts acetic acid, 1 part of bromine and 4 parts of nitrobenzene by volume. Close the tube, shake the contents and allow to stand for six hours at laboratory temperature. If no precipitate forms, polybromides are deemed to be absent.

Grease proof paper and aluminium foil, glass and tinned steel containers are preferred.