هيئة التقييس لدول مجلس التعاون لدول الخليج العربية   
G.C.C STANDARDIZATION ORGANIZATION (GSO)    
   
   
   
   
   
Final Draft   
   
    
    
GSO 05/FDS     / 2012     
    
    
    
    
    
OIL OF ONION     
    
    
    
    
    
    
    
    
Prepared by:     
Gulf technical committee for sector standard of food and agricultural products     
    
    
    
This document is a draft Gulf Standard circulated for comments, it is therefore, subject to    
Alteration and modification, and may not be referred it as a Gulf Standard, until approved by    
the Board of Directors.     
     
GSO STATNDARD                                                                             GSO……../2012  
 
    
 
Foreword  
 
GCC Standardization Organization (GSO) is a regional Organization which 
consists of the National Standards Bodies of GCC member States. One of GSO 
main functions is to issue Gulf Standards /Technical regulations through 
specialized technical committees (TCs).  
 
GSO through  the  technical  program of committe e TC No. 5" Technical 
Committee for Sector of Food and Agriculture Products  " has prepared this gulf 
standard . The Draft Standard has been prepared by ( State of Kuwait ). 
 
The draft Standard has been prepared based on relevant ,International and 
National f oreign Standards and references.  
This standard has been approved as a Gulf (Technical Regulation) by GSO 
Board of Directors in its meeting No.(       ),held on                                 /     /             
H ,      /     /   
   
GSO STATNDARD                                                                             GSO……../2012  
 
   ONION OIL   
 
1- Scope  
This Gulf Standard specifies the general requirements and specifications for  Onion  Oil . 
  
2- Complementary References  
  
2.1 GSO 9    "Labeling of prepackaged food stuffs"  
2.2 GSO 21 " Hygienic Regulations for food plants and their personnel".  
2.3 GSO 150 " Expiration periods of  food products ".  
2.4 GSO ISO/TR 210  "Essential oils – General rules for packaging, conditioning and 
storage"  
2.5 GSO ISO TR/211 "Essential oils – General rules for labeling and marking of 
containers"  
2.6   GSO ISO 212 "Essential oils: Sampling"  
2.7 GSO ISO 356 "Essential oils: preparation of test samples"  
2.8     GSO/ ISO 279 " Essential oils: Determination of relative density at 20oC – reference 
method"  
2.9 GSO ISO 280 "essential oils: Determination of refractive index"  
2.10 GSO ISO 592 "Essential oils: determination of optical rotation".  
2.11 GSO ISO 875 "Essential oils – Evaluation of miscibility in Ethanol"   
2.12 GSO ISO 1242 "Essential oils – determination of acid value"  
2.13 GSO ISO 709 "Essential o ils –  Determination of ester value"  
 
3- Definitions  
3.1 Onion oil: 
Is the volatile oil resulting from the steam distillation of  crushed  fresh onion  plants , 
known scientifically as  ( Allium cepa  L. ) 
4- General Requirement  
4.1 It shall be a liquid oily texture and may contain a light turbidity  . 
4.2 It shall be fine pure oil free of any impurities or residues or foreign matter  . 
4.3 It shall be free of heavy metals, water, alcohol, paraffin, and others.  
4.4 The range of specific gravity at 15 °C shall be from 1.04 7 to 1.135.. . 
4.5 Range of refractive index at 20 ° C shall be from 1. 5373  to 1.57 00 . 
4.6      Optical rotation at 20 ° C shall t be +1.30 to+3.53  
4.7 It shall be yellow to brown color .   
4.8 It shall have characteristic permeable odor of onion.   
  
GSO STATNDARD                                                                             GSO……../2012  
 
   5-  Packaging, Transportation and Storage   
Without prejudice to what mentioned in Gulf Standard stated in clause (2. 4), the 
following shall be taken in consideration:  
5.1 Packaging  
Oils shall be packed in containers made from suitable, healthy materials and do not 
affect the properties and quality of the oils, and it should be  hermetically sealed  . 
5.2  Transportation  
The transportation shall be in means which protect the containers from damage and 
pollution . 
5.3 Storage  
The container shall be kept in a cool place away from light and heat sources.   
6- Sampling  
6.1 The sample shall be taken  and prepared  according to the Gulf s tandard mentioned in 
clause s (2.6, 2.7). 
6.2 Minimum volume of final sample: 25 ml . 
NOTE:  This volume allows each of the tests specified in this standard to be carried out at least 
once 
 
7-   Testing Methods  
Tests shall be according to the GSO standards of examining and testing methods 
mentioned in clauses (2.8) , (2.9), (2.10) .  
8- Labeling  
Without prejudice to what mentioned in Gulf Standard stated in clauses (2.1) and 
(2.5), the following shall be declared on the label : 
8.1 Name of the product "onion oil".  
 .  Name of the  producer , address and its brand if any.  
8.3 The net weight . 
8.4 Production and Expiry date as mentioned in GSO standard in clause  (2.3). 
8.5 Country of origin . 
8.6 Expiry date  according to adop ted gulf standard in this issue . 
 
   
GSO STATNDARD                                                                             GSO……../2012  
 
   Reference  
- Egyptian standard No. 1384 "Onion Oil"  
- Guenther, the essential oils , VO;L -VI