DRAFT UGANDA STANDARD FINAL DRAFT UGANDA 
STANDARD  
  FDUS EAS 331 
Second  Edition  
2013-mm-dd 
 
 Reference number  
FDUS EAS 331: 2013 
© UNBS 201 3 
  
Green grams — Specification  
 DRAFT UGANDA STANDARDFDUS EAS 3 31: 2013 
ii                © UN BS 2013 - All rights reserved 
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not purport to include all necessary provisions of a contract. Users are 
responsible for its correct application  
© UNBS 2013 
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written 
permission from UNBS. 
Requests for permission to reproduce this document should be addressed to 
The Executive Director 
Uganda National Bureau of Standards 
P.O. Box 6329 
Kampala 
Uganda 
Tel: 256 41 505 995 
Fax: 256 41 286 123 
E-mail: unbs@infocom.co.ug  
Web: www.unbs.go.ug  
 DRAFT UGANDA STANDARDFDUS EAS 3 31: 2013 
© UNBS  2013 - All rights reserved                iii National foreword 
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Tourism, Trade and 
Industry established under Cap 3 27, of the Laws of Uganda. UNBS is mandated to co-ordinate the elaboration 
of standards and is  
(a) a member of International Organisation for Standardisation (ISO) and  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT/SPS Agreements of the World Trade Organisation (WTO). 
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is established to deliberate on standards in a given field or area and consists of representatives of 
consumers, traders, academicians, manufacturers, government and other stakeholders. 
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the 
general public for comments. The committee reviews the comments before recommending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council. 
This Final Draft Uganda Standard, FDUS EAS 331: 2013, Green grams — Specification , is identical with  and 
has been reproduced from an East African  Standard , EAS 331: 2013 , Green grams — Specification , and is 
being proposed for adoption as a Uganda Standard.  
This second edition cancels and replaces the first edition (US EAS 331:20 11) which has been technically 
revised. 
Wherever the words, “ East African Standard" appear, they should be replaced by "Uganda Standard." 
 
  DRAFT UGANDA STANDARD FDEAS 331:2013 
ICS 67.060  
© EAS 2013                                                                                                                         Second Edition 2013  
 
FINAL DRAFT EAST AFRICAN STANDARD 
Green grams — Specification 
EAST AFRICAN COMMUNITY DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDFDEAS 331:2013 
ii © EAC  2013  – All rights res erved  
 Copyright notice 
This EAC document is copyright-protected by EAC. While the reproduction of this document by 
participants in the EAC standards development process is permitted without prior permission from EAC, 
neither this document nor any extract from it may be reproduced, stored or transmitted in any form for 
any other purpose without prior written permission from EAC. 
Requests for permission to reproduce this document for the purpose of selling it should be addressed 
as shown below or to EAC’s member body in the country of the requester:  
© East African Community 2013  — All rights reserved 
East African Community  
P.O.Box 1096 
Arusha 
Tanzania 
Tel: 255 27 2504253/8 
Fax: 255 27 2504481/2504255 
E-mail: eac@eachq.org 
       Web: www.eac -quality.net  
Reproduction for sales purposes may be subject to royalty payments or a licensing agreement. 
Violators may be persecuted DRAFT UGANDA STANDARDFDEA S 331:2013 
© EAC 2013 – All rights reserved  iii 
 Contents Page 
Foreword ............................................................................................................................................................  iv 
1 Scope  ................................ ................................ ................................ ................................ ...................... 1 
2 Normative references  ................................ ................................ ............................................................  1 
3 Terms and definitions  ................................ ................................ ...........................................................  1 
4 Quality requirements ................................ ................................ .............................................................  2 
4.1 General requirements  ................................ ................................ ...........................................................  2 
4.2  Specific requirements  ................................ ................................ ...........................................................  2 
5 Contaminants  ................................................................ ................................ ................................ ......... 3 
5.1 Pesticide residues  ................................ ................................................................ ................................ . 3 
5.2 Other contaminants  ................................ ................................ ...............................................................  3 
6 Hygiene  ................................ ................................ ................................ ................................ ................... 4 
7 Packaging  ................................ ................................ ................................ ................................ ............... 4 
8 Labelling  ................................ ................................ ................................ ................................ ................. 4 
9 Sampling methods  ................................ ................................ ................................................................  5 
 
 DRAFT UGANDA STANDARDFDEAS 331:2013 
iv © EAC  2013  – All rights res erved  
 Foreword 
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standardization, trade barriers that are encountered when goods and services are exchanged 
within the Community will be removed.  
In order to achieve this objective, the Community established an East African Standards Committee mandated 
to develop and issue East African Standards.   
The Committee is composed of representatives of the National Standards Bodies in Partner States, together 
with the representatives from the private sectors and consumer organizations. Draft East African Standards 
are circulated to stakeholders through the National Standards Bodies in the Partner States. The comments 
received are discussed and incorporated before finalization of standards, in accordance with the procedures 
of the Community. 
East African Standards are subject to review, to keep pace with technological advances. Users of the East 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are implementing .  
FDEAS 331:2012 was prepared by Technical Committee EAS/TC 014 , Cereals, Pulses and related products  
This second edition cancels and replaces the first edition (EAS 331:2002) which has been technically revised. 
 DRAFT UGANDA STANDARDFDEA S 331:2013 
© EAC 2013 – All rights reserved  v 
 Introduction 
This standard has been developed to take into account: 
a) the needs of the market for the product;  
b) the need to facilitate fair domestic, regional and international trade and prevent technical barriers to 
trade by establishing a common trading language for buyers and sellers; 
c) the structure of the CODEX, UNECE, USA, ISO and other internationally significant standards; 
d) the needs of the producers in gaining knowledge of market standards, conformity assessment, 
commercial cultivars and crop production process; 
e) the need to transport the product in a manner that ensures keeping of quality until it reaches the 
consumer; 
f) the need for the plant protection authority to certify, through a simplified form, that the product is fit for 
cross-border and international trade without carrying plant disease vectors; 
g) the need to promote good agricultural practices that will enhance wider market access, involvement of 
small-scale traders and hence making farming a viable means of wealth creation; and 
h) the need to ensure a reliable production base of consistent and safe crops that meet customer 
requirements. 
 
 DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDFINAL DRAFT EAST AFRICAN STANDARD  FDEAS 331:2013 
 
© EAC 2013 – All rights reserved  1 
 Green grams — Specification 
1 Scope 
This Final Draft East African Standard specifies requirements and methods of sampling and test for the dry 
whole grains of the green gram of the cultivar Vigna radiata  intended for direct human consumption.  
2 Normative references 
The following referenced documents are indispensable for the application of this document. For dated 
references, only the edition cited applies. For undated references, the latest edition of the referenced 
document (including any amendments) applies. 
EAS 38, Labelling of pre-packaged foods — Specification 
EAS 39, Hygiene in the food and drink manufacturing industry — Code of practice 
EAS 79, Cereals, pulses and milled products — Sampling of static batches 
EAS 217, Methods for the microbiological examination of foods 
ISO 520, Cereals and pulses — Determination of the mass of 1000 grains 
ISO 605, Pulses — Determination of impurities, size, foreign odours, insects, and species and variety — Test 
methods 
ISO 13690, Cereals, pulses and milled products — Sampling of static batches 
ISO 16050, Foodstuffs — Determination of aflatoxin B1, and the total content of aflatoxin B1, B2, G1 and G2 
in cereals, nuts and derived products  — High performance liquid chromatographic method 
ISO 24557, Pulses — Determination of moisture content — Air-oven method 
CODEX STAN 193, Codex general standard for contaminants and toxins in food and feed 
3 Terms and definitions  
For the purposes of this standard, the following terms and definitions shall apply. 
3.1 
green grams 
dry whole grains of Vigna radiata 
3.2 
damaged  
green grams which are distinctly identified as having been visibly affected by insects, fungi, heat, water, 
disease or any other causative agent. These include grains that are damaged or split in the process of 
handling or those that are off colour. DRAFT UGANDA STANDARD 
2 © EAC  2013  – All rights res erved  
 3.3 
immature  
green grams  which are not fully developed, normally smalle r in size than the mature g rins, shrivelled and off 
colour  
3.4 
objectionable odours 
odours which are entirely foreign to green grams and which, because of their presence, render green grams 
unfit for human consumption 
3.5 
pest infestation 
presence of live insects or other organisms, either in adult or other development stages 
3.6 
foreign matter 
extraneous matter than green grams or other food grains comprising of: 
a) "inorganic matter" includes metallic pieces, shale, glass, dust, sand, gravel, stones, dirt, pebbles, 
lumps or earth, clay, mud and animal filth etc; and 
b) "organic matter" consisting of detached seed coats, straws, weeds and other inedible grains etc. 
3.7 
type admixture 
other grains that are not green grams 
3.8 
food grade material 
packaging material , made of substances which are safe and suitable for their intended use and which will not 
impart any toxic substance or undesirable odour or flavour to the product. 
4 Quality requirements 
4.1 General requirements 
Green grams shall be: 
a) the dried mature seeds of pulse green gram ( Phaseolus aurues  Roxb. or Phaseolus radiatus  Roxb); 
b) well-filled, clean, wholesome, uniform in size, and shape; 
c) free from substances which render them unfit for human or animal consumption or processing into or 
utilization thereof as food or feed; 
d) free from abnormal flavours, musty, sour or other undesirable odour, obnoxious smell and discoloration; 
and 
e) free from micro-organisms and substances originating from micro-organisms, fungi or other poisonous or 
deleterious substances in amounts that may constitute a hazard to human health. 
4.2  Specific requirements 
Green grams shall be categorised into three grades on the basis of the tolerable limits established in Table 1.  DRAFT UGANDA STANDARD 
© EAC 2013 – All rights reserved  3 
 Table 1 — Specific requirements 
S/N Characteristic s Grade  Method of 
test 
1 2 3 
i)  Moisture, % m/m max.  14 ISO 24557  
ii)  Size grading , % m/m min.  98 98 n/a  
 
 
 
 
 
 
ISO 605  
 
 iii)  Purity, % m/m min.  99.0 
iv)  Defective, % m/m max  2.0 4.0 6.0 
v)  Immature grain % m/m max.  2.0 3.0 4.0 
vi)  Contrasting classes , % m/m max.  0.5 1.0 2.0 
vii)  Classes that blend , % m/m max.  5.0 10.0 15.0 
viii)  Germination , % max.  
(excluding hard seeds ) 90 n/a n/a 
ix)  Sprout test  Suitable  n/a n/a 
x)  Foreign material % 
m/m max  Organic  0.65 
inorganic  0.25 
Filth 0.1 
xi)  Other edible gr ains, % m/m max.  
(any edible grains including oilseeds  
other than green grams ) 0.1  
0.5  
3.0 
xii)  Inset /pest damaged , % m/m max.  
(grains per cent by count clean -cut 
weevil bored ) 1  
2  
3 
xiii)  Total aflatoxin (AFB 1+AFB 2+AFG 1 
+AFG 2), ppb  max.  10 ISO 16050  
xiv)  Aflatoxin B 1, ppb  max 5 
xv)  Fumonisin ppm max.  2 AOAC 2001.04  
5 Contaminants 
5.1 Pesticide residues 
Green grams shall comply with those maximum pesticide residue limits established by the Codex Alimentarius 
Commission for this commodity.  
NOTE Where the use of certain pesticides is prohibited by some Partner States, it should be notified to all Partner 
States accordingly. 
5.2 Other contaminants 
Green grams shall comply with those maximum limits for other contaminants established in CODEX STAN 
193. DRAFT UGANDA STANDARD 
4 © EAC  2013  – All rights res erved  
 6 Hygiene 
6.1 Dry green grams  shall be produced, prepared and handled in accordance with the provisions of 
appropriate sections of EAS 39.  
6.2 When tested by appropriate standards of sampling and examination listed in Clause 2, the products shall: 
a) be free from microorganisms in amounts which may represent a hazard to health and shall not exceed 
the limits stipulated in Table 2; 
b) be free from parasites which may represent a hazard to health; and 
c) not contain any substance originating from microorganisms in amounts which may represent a hazard 
to health. 
Table 2 — Microbiological limits 
S/N Type of micro -organism  Limits  Method  of test 
i) Yeasts and moulds , cfu per g  max.  104 
EAS 217  ii) Staphylococcus .aureus , cfu per g  max.  103 
iii) Escherichia  coli, per g Absent  
iv) Salmonella  per 25 g  Absent  
7 Packaging 
7.1 Dry green grams shall be packed in suitable packages which shall be clean, sound, free from insect, 
fungal infestation and the packaging material shall be food grade. 
7.2 Dry green grams shall be packed in containers which will safeguard the hygienic, nutritional, 
technological and organoleptic qualities of the products. 
7.3 Each package shall contain Dry green grams of the same type and of the same grade designation. 
7.4  If Dry green grams are presented in bags, the bags shall also be free of pests and contaminants. 
7.5 Each package shall be securely closed and sealed. 
8 Labelling 
In addition to the requirements in EAS 38, each package shall be legibly and indelibly labelled with the 
following: 
a) product name as “Dry green grams ”; 
b) variety;  
c) grade; 
d) name, address and physical location of the producer/ packer/importer; 
e) lot/batch/code number; 
f) net weight, in kilograms; DRAFT UGANDA STANDARD 
© EAC 2013 – All rights reserved  5 
 NOTE  EAC Partner States are signatory to the International Labour Organizations (ILO) for maximum package 
weight of 50 kg where human loading and offloading is involved. 
g) the declaration “Food for human consumption’’  
h) storage instruction as “Store in a cool dry place away from any contaminants’’;  
i) crop year; 
j) packing date; 
k) instructions on disposal of used package; 
l) country of origin; and 
m) a declaration on whether the green grams were genetically modified or not. 
9 Sampling methods 
Sampling shall be done in accordance with the EAS 79/ISO 13690. 
 DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDFDEAS 331:2013    
 
© EAC 2013 – All rights reserved