Reference number  
DRS 358: 2017  
© RSB 2017  
 
 
 RWANDA 
STANDARD  DRS  
358 
 
First edition  
2017 -mm-dd 
 
Banana juice — Specification  
  DRS 358: 2017  
©RSB 2017 - 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 2017  
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. +250 252 586103/ 582945  
Toll Free: 3250  
E-mail: info@rsb.gov.rw  
Website: www.rsb.gov.rw  DRS 358: 2017  
iii                ©RSB 2017  - All rights reserved  
 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 quality requirements  ................................ ................................ ................................ ..............  3 
6 Contaminants  ................................ ................................ ................................ ................................ .........  4 
6.1 Pesticide residues  ................................ ................................ ................................ ................................ . 4 
6.2 Heavy metals  ................................ ................................ ................................ ................................ ..........  4 
7 Packaging  ................................ ................................ ................................ ................................ ...............  4 
8 Labelling  ................................ ................................ ................................ ................................ .................  4 
9 Sampling  ................................ ................................ ................................ ................................ ................  5 
 DRS 358: 2017  
©RSB 2017 - 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 
adop ted by Technical committ ees are ratified  by me mbers of RSB Board of Director s for publication and 
gazettment as Rwanda Standards.  
DRS 358 was prepared by Technical Committee RSB/TC 001, Beverages . 
In the preparation of this standard, reference was made to the following standard s: 
1) RS 224:  2016 , Urwagwa — Specification   
2) RS 202:  2013 , Fruit juices and nectars — Specification  
The assistance de rived from the above source is hereby acknowledged with thank s. 
Committee membership  
The following organizations were represented on the Technical Committee on Beverages (RSB/TC 001) in the  
preparation of this standard.  
Braseries et Limonaderies du Rwanda (BRALIRWA  
Duhange kuby’iwacu Enterprise  
Enterprise  UMURAGE  
Enterprise  URWIBUTSO  
Imbaraga z’ibimera (IHC Ltd)  
INDAKEMWA Ltd  
Institut Catholique de Kabgayi (ICK)  
KASESE Distillers  
La Carmela Delice  DRS 358: 2017  
v                ©RSB 2017  - All rights reserved  
 SALUNA Company Ltd  
University of Rwanda, College of Agriculture, Animal sciences and Veterinary medicine  (UR-CAVM)  
Rwanda Standards Board  (RSB) – Secretariat  
 DRS  358: 2017  
1                ©RSB 2017  - All rights reserved  
 Banana juice — Specification  
1 Scope  
This Rwanda Draft Standard specifies the requirements and methods of sam pling  and test for banana juice  
intended for human consumption.  
2 Normative references  
The following documents are referred to in the 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.  
RS CAC/RCP1 , Code of practice — Genera l principles of food hygiene  
RS EAS 38 , General Standard for the labelling of pre -packaged foods  
RS EAS 12, Potable water — Specification  
RS ISO 4833 -1, Microbiology  of food and animal feeding stuffs — Horizontal method for the enumer ation of 
microorganism s — Part 1: Colony count at 30 degrees C by the pour plate technique  
RS ISO 16649 -1, Microbiology  of food and animal feeding stuffs — Horizontal method for the enumeration of 
beta-glucuronidase -positive Escherichia coli — Part 1: Colony -count technique at 44 degrees C using 
membranes and 5 -bromo -4-chloro -3-indolyl Beta -D-glucuronide  
RS ISO 6579,  Microbiology  of food and animal feeding stuffs — Horizontal method for the detection of 
Salmonella spp  
RS ISO 6888 -1, Microbiology  of food and animal feeding stuffs  — Horizontal method for the enumeration of 
coagulase -positive staphylococci (Staphylococcus aureus and other species) — Part 1: Technique using 
Baird -Parker agar medium  
RS ISO 21527 -1, Microbiology  of food and animal feeding stuffs — Horizontal method for  the enumeration of 
yeasts and moulds — Part 1: Colony count technique in products with water activity greater than 0,95  
3 Terms and definitions  
For the purposes of this standard , the follow ing terms and definitions apply.   
©RSB 2017 - All rights reserved                  2 
 3.1 
banana juice ( umuhama /umwikamire ) 
unfermented but fermentable liquid obtained by suitable means from the edible part of sound, appropriately 
mature and ripe banana fruits  without further addition  
3.2 
concentrate d banana juice  
banana juice in which water  has been removed by  suitable means  
3.3 
banana nectar  
banana juice to which water has been added with or without th e addition of sugars, honey and/ or food 
additive s 
3.4 
extraneous matter  
includes  inorganic matter such as sand, glass, metal, gravel, dirt, pebbles, stones, lumps of earth, clay and 
mud and organic matter such as chaff, straw, weed seeds and grains of crops, insects or insects’ fragments, 
rodent hairs or any other foreign matter  
3.5 
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 Quality r equirements  
4.1 General requirements  
Banana juice shall be : 
a) free from any substances injurious to health;  
b) clean, practically fre e of any visible extraneous matter ; 
c) free from any harmful ingredients or substances ; 
d) have the characteristic appearance, taste and aroma o f natural banana juice;  DRS  358: 2017  
3                ©RSB 2017  - All rights reserved  
 e) free from any signs of fermentation; and  
f) where water  has been added,  it shall comply with RS EAS 12 . 
4.2 Specific quality  requirements  
Banana juice shall comply with the specific quality re quirements stipulated in Table 1  
Table 1 — Specific requirements for banana juice  
S/N Characteristic  Requirement  Method of test  
concentrated  Umuhama/ 
Umwikamire  Nectar/ufunguye  
1.  pH,  4-5 4-5 4.0-5.0 AOAC 940.19  
2.  Fructose, % , min 10.5 7.0 3.5 
RS EAS 104  3.  Total solids ( Brix) min  30 20 10 
4.  Glucose, % m/m, min  7.5 5.0 2.5 
5.  Total Acidi ty as anhydrous 
citric-acid, % m/m, max.  1.05 0.7 0.35 
6.  Sucrose, % m/m , max.  5.0 - 9.0 5.0 - 9.0 5.0 - 9.0 
7.  Volati le acidity as acetic acid, 
g/l, max Absent  
5 Hygiene  
5.1 Banana juice shall be processed, packaged, stored and distributed under hygienic conditions 
prescribed in the RS CAC/RCP  1. 
5.2 When tested in accordance with a ppropriate methods,  banana juice shall be free from microorganisms 
in amounts which may represent a hazard to health and shall meet the requirements  specified in Table 2.  
Table 2 — Microbiological limits for banana juice  
S/N Characteristic  Requirements  Method of Test  
1.  Total viable counts, CFU/ml, max  102 RS ISO 4833 -1 
2.  E. coli , CFU/ml, max  Absent  RS ISO 16649 -1 
3.  Salmonella , CFU per 25 ml max  Absent  RS ISO 6579  
4.  Staphylococcus aureus , CFU/ml , max  Absent  RS ISO 6888 -1 
5.  Yeast and moulds, CFU/ml, max  100 RS ISO 21527 -1 
  
©RSB 2017 - All rights reserved                  4 
 6 Contaminants  
6.1 Pesticide residues  
The products cov ered by the provisions of this s tandard sh all comply with those maximum residue limits for 
pesticides established by the Codex Alimentariu s Commission for these products.  
6.2 Heavy metals  
Banana juice shall not contain heavy metals in levels exceeding  the limits indicated in Table 3 . 
Table 3 — Limits for  heavy metal contaminants in Banana juice  
S/N Type of impurity  Limit  Test method  
1.  Arsenic (as As), mg/L, max.  0.01 RS ISO 6634  
2.  Lead (as Pb), mg/L, max  0.2 AOAC 972.25  
3.  Cadmium (as Cd) mg/L, max  0.1 AOAC 999.11  
7 Packaging  
Banana juice shall be packaged in food grade packaging material . 
8 Labellin g 
In addition to the requirements of RS EAS 38, the following specific labelling requirements shall apply and 
shall be legibly and indelibly marked:  
a) name of the product “ Banana juice” ; 
b) type of banana juice  as concentrated, umuhama /umwikamire  and/or nectar ; 
c) name and physical and postal address of manufacturer;  
d) net contents  shall be declared by volume in metric units; 
e) date of manufacture;  
f) expiry da te; 
g) storage instruction s; 
h) list of  ingredients ; 
i) batch number;  and DRS  358: 2017  
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 j) country of origin or the declaration ‘made in Rwanda’ for lo cally manufactured products.  When the 
product undergoes processing in a second country which changes its nature, the country in which 
processing is performed shall be considered to be the country of origin for the purpose of labelling . 
9 Sampling  
Each container of banana juice sampled at random shall constitute a sample for purpose of testing . 
 DRS  358: 2017  
ICS 67.160.20  
 
 
©RSB 2017  - All right s reserved