ICS 67.080.10  
 
Reference number  
DRS 474: 2021  
© RSB 2021  
  
 RWANDA 
STANDARD  DRS 
474  
 
First edition  
2021 -mm-dd 
 
Citrus fruits powder — Specification  
   
DRS 474: 2021  
©RSB 2021  - All rights reserved                  ii 
 In order to match with technological development and to keep continuous progress in industries, 
standards are subject to periodic review. Users shall ascertain that they are in possession of the latest 
edition  
 
 
 
 
 
 
 
 
© RSB 2021  
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized 
in any form or by any means, electronic or mechanical, including photocopying and microfilm, without 
prior written permission from R SB. 
Requests for permission to reprodu ce this document should be addressed to : 
Rwanda Standards  Board  
P.O Box 7099 Kigali -Rwanda  
KK 15 Rd, 49  
Tel. +250 788303492  
Toll Free: 3250  
E-mail: info@rsb.gov.rw  
Website: www.rsb.gov.rw  
ePortal: www.portal.rsb.gov.rw   DRS 474: 2021  
iii                ©RSB 2021  - All rights reserved  
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ...................  iv 
1 Scope  ................................ ................................ ................................ ................................ .............  1 
2 Normative references  ................................ ................................ ................................ ...................  1 
3 Terms and definitions  ................................ ................................ ................................ ..................  2 
4 Requirem ents ................................ ................................ ................................ ................................  2 
4.1 Raw materials  ................................ ................................ ................................ ...............................  2 
4.2 General requirements  ................................ ................................ ................................ ..................  2 
4.3 Types of citrus fruits  ................................ ................................ ................................ ....................  3 
4.4 Specific requirements  ................................ ................................ ................................ ..................  3 
5 Food additives  ................................ ................................ ................................ ..............................  3 
6 Hygiene  ................................ ................................ ................................ ................................ ..........  3 
7 Contaminants  ................................ ................................ ................................ ................................  4 
7.1 Pesticide residues  ................................ ................................ ................................ ........................  4 
7.2 Heavy metals  ................................ ................................ ................................ ................................ . 4 
7.3 Aflatoxin  ................................ ................................ ................................ ................................ ........  4 
8 Packaging  ................................ ................................ ................................ ................................ ...... 4 
9 Labelling  ................................ ................................ ................................ ................................ ........  4 
10 Sampling  ................................ ................................ ................................ ................................ ....... 5 
 DRS 474: 2021  
©RSB 2021  - All rights reserved                  iv 
 Foreword  
Rwanda Standard s are prepared  by Technical Committees and approved by R wanda Standards Board (RSB) 
Board  of Directors in  accordance with the procedures of RSB, in compliance with Annex 3 of the WTO/TBT 
agreement on the preparation, adoption and application of standards.  
The main task of technical committees is to prepare national standards.  Final Draft Rwanda S tandards adopted 
by Technical committ ees are ratifie d by me mbers of RSB Board of Director s for publication and gazettment as 
Rwanda Standards.  
DRS 474 was prepared by Technical Committee RSB/TC 038 on Processed Fruits and Vegetables and RSB/TC 
002 on Tea and derived products.  
In the preparation of this stan dard, reference was made to the following standard:  
1) GSO 2011, Lemon powder standard  
The assistance de rived from the above source is hereby acknowledged with thanks.  
Committee membership  
The following organizations were represented on the Technical Committee on Processed Fruits and Vegetables 
(RSB/TC 038) and Tea  and derived products  (RSB/TC 002)  in the preparation of this standard.  
Amazon Nutrition Cabinet  
Anas  Ltd 
Benya Company Ltd  
Bora Wa Uzima  
Cooperative Des Agriculteurs et de Transformateurs d’ananas de  Mutendeli (Catam)  
National Agricultural Export Development Board provides (NAEB)  
Netrapi Ltd  
Nyarutarama Business Incubation Centre  
Rwagasabo Beverages Ltd  
Rwanda  Agriculture and Anima l Resources Development Board  (RAB)  
Rwanda Food and Drug Authority (RFDA)  DRS 474: 2021  
v                ©RSB 2021  - All rights reserved  
 Rwanda Mountain Tea  
Rwanda Tea Packers Ltd  
Shagasha Tea Company  
Shekina Enterprise  
Sorwatom  Ltd 
Spic Ltd  
Tuzamurane Cooperative  
Urwibutso Enterprise  
Winners Together Ltd  
Rwanda  Standards Board  (RSB) – Secretariat  
 DRS 474: 2021  
1                ©RSB 2021  - All rights reserved  
 Citrus fruits powder  — Specification  
1 Scope   
This Draft Rwanda Standard specifies requirements, sampling and test methods for citrus fruits powder intended 
for human consumption.  
This Draft Rwanda Standard excludes powders claimed to have medical or other health effects  
2 Normative references   
The following documents are referred to in th e text in such a way that some or all of  their content constitutes 
requirements 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 . 
ISO 1575, Tea — Determination of total ash  
RS CAC/RCP 1, General principles of food hygiene  
RS CODEX STAN 192 , General standard for food additives  
RS CODEX STAN 193, General standard for contaminants and toxins in food and feed  
RS EAS 38, Labelling of pr e-packaged foods — General requirements  
RS ISO 1576, Tea — Determination of water -soluble ash and water -insoluble ash  
RS ISO 1577, Tea — Determination of acid -insoluble ash  
RS ISO 16050, Foodstuffs — Determination of aflatoxin B1, and the total content of aflatoxins B1, B2, G1 and 
G2 in cereals, nuts and derived products — High-performance liquid chromatographic method  
RS ISO 16649 -2, Microbiology of food and animal feeding stuffs — Horizontal method for the enumeration of 
beta-glucuronidase -positive Escher ichia coli — Part 2: Colony -count technique at 44 degrees C using 5 -bromo -
4-chloro -3-indolyl beta -D-glucuronide  
RS ISO 1839, Tea — Sampling  
RS ISO 21527 -2, Microbiology of food and animal feeding stuffs — Horizontal method for the enumeration of 
yeasts and  moulds — Part 2: Colony count technique in products with water activity less than or equal to 0,95  
RS ISO 5498, Agricultural food products — Determination of crude fibre content — General method   
©RSB 2021  - All rights reserved                  2 
 RS ISO 6579 -1, Microbiology of the food chain — Horizontal method for the detection, enumeration and 
serotyping of Salmonella — Part 1: Detection of Salmonella spp.  
RS ISO 7513 , Instant tea in solid form — Determination of moisture content (loss in mass at 103 degrees C)  
RS ISO 9768, Tea — Determination of water extract  
3 Terms and definitions   
For the purposes of this standard, the follow ing terms and definitions apply . 
3.1 
citrus fruits powder  
powder obtained from dried citrus fruits from which the seeds have been removed  
3.2 
adulterant  
any material intentionally added that changes the original composition and compromises the quality and safety 
of citrus fruits powder  
3.3 
food grade packaging 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 Requirements  
4.1 Raw materials  
Citrus fruits peels and base  
4.2 General requirements  
Citrus fruits powder shall:  
a) have characteristic appearance, colour, taste, odour of the citrus fruit used;  
b) be free from dirt, fungal growth and insect infestation;  
c) be free from foreign matter;  DRS 474: 2021  
3                ©RSB 2021  - All rights reserved  
 d) be free from off flavours and odours; and  
e) be free from adulterants.  
4.3 Types of citrus fruits  
All cultivated fruits of the Citrus species  
4.4 Specific requirements  
Citrus fruits powder shall comply with the specific requirements given in Table 1 when tested in accordance with 
the test methods specified therein.  
Table 1 —Specific requirements for citrus fruits powder  
S/N Characteristic  Requirement  Test method   
i.  Moisture, %, (max) by mass max.  10 RS ISO 7513  
ii.  Total ash % m/m max.  4.0 ISO 1575  
iii.  Water extract % m/m min.  32 RS ISO 9768  
iv.  Water soluble ash as percentage of total ash, min.  45 RS ISO 1576  
v.  Acid insoluble ash in hydrochloric acid, % m/m, 
max.   1.0 RS ISO 1577  
vi.  Crude fibre, %, max.   16.5 RS ISO 5498  
5 Food additives  
Food additives may be used in citrus fruits powder in accordance with RS CODEX STAN 192  
6 Hygiene  
6.1 Citrus fruits powder shall be processed and handled in a hygienic manner in accordance with RS 
CAC/RCP 1  
6.2 Citrus fruits powder shall not exceed microbiological limits given in Table 2 when tested in accordance 
with the test methods specified therein.  
Table 2— Microbiological limits for Citrus fruits powder  
S/N Microorganism  Maximum limit  Test method  
i.  Yeast and moulds , cfu/g  102 RS ISO 21527 -2 
ii.  Salmonella spp  per 25 g  Absent  RS ISO 6579 -1 
iii.  E.coli  , cfu/g  Absent  RS ISO 16649 -2  
©RSB 2021  - All rights reserved                  4 
 7 Contaminants  
7.1 Pesticide residues  
Citrus fruits powder shall comply with the updated maximum pesticide residue limits established by the Codex 
Alimentarius Commission.  
7.2 Heavy metals  
Heavy metals in citrus fruits powder shall not exceed maximum residue limits as stipulated in RS CODEX STAN 
193. 
7.3 Aflatoxin  
The maximum content of aflatoxins in citrus fruits powder when determined in accordance the method described 
in RS ISO 16050 shall not exceed 10µg/kg for total aflatoxins and 5 µg/kg (ppb) for aflatoxin B1.  
8 Packaging  
Citrus fruits powder sha ll be packaged in food grade packaging materials that will safeguard the hygienic, 
nutritional and organoleptic qualities of the product.  
9 Labelling  
9.1 In addition to the requirements specified in RS EAS 38, each package of citrus fruits powder shall be 
legibly and indelibly labelled with the following:  
a) name of the product as “citrus fruits powder”;  
b) the type of citrus fruit used;  
c) net weight;  
d) name and physical address of the manufacturer/packer/importer/exporter;  
e) list of ingredients in descending order;  
f) date of manufacture;  
g) best before date/expiry date;  
h) batch/lot number;  
i) net weight;  DRS 474: 2021  
5                ©RSB 2021  - All rights reserved  
 j) country of origin;  
k) storage instructions;  
l) instructions for use;  
m) allergens if any;  
n) Food additives, if used; and  
o) instructions for disposal of used package.  
9.2 When labelling  non-retail packages, information for non -retail packages shall either be given on the 
packages or in accompanying documents, except that the name of the product, lot identification and the name 
and address of the manufacturer or packer shall appear on the  packages  
10 Sampling  
Sampling of citrus fruits powders shall be in accordance to RS ISO 1839 . 
 
 DRS 474: 2021  
 
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