TEST RE­SULTS

Consumer Voice - - SunFlower Oils -

FOR PHYSICOCHEMICAL PA­RAM­E­TERS Io­dine value | Saponi­fi­ca­tion value | Un­saponifi­able mat­ter | Re­frac­tive in­dex | Acid value | Arge­mone oil

| Sus­pended par­ti­cles | Vis­i­bil­ity | Odour Io­dine value

Re­quire­ment: 100–145 The io­dine value is a mea­sure of the un­sat­u­rated fats. All brands were within the spec­i­fied limit. Vi­jaya, Sun­drop and For­tune Sun­lite scored higher in

this pa­ram­e­ter.

Saponi­fi­ca­tion value

The saponi­fi­ca­tion value helps to de­tect the pres­ence of other oils/fats. It is ex­pressed as the num­ber of mil­ligrams of potas­sium hy­drox­ide (KOH) re­quired to saponify one gram of the sam­ple. Saponi­fi­ca­tion value of sun­flower oil should be be­tween 188 and 194. All brands were within the spec­i­fied limit. Vi­jaya, Free­dom and For­tune Sun­lite scored higher in

this pa­ram­e­ter.

Un­saponifi­able mat­ter

Un­saponifi­able mat­ter in­cludes sub­stances fre­quently found dis­solved in fatty acids and dry­ing oils that can­not be saponi­fied by caus­tic treat­ment, but which are sol­u­ble in the nor­mal fat sol­vents. Un­saponifi­able mat­ter must not be more than 1.5 per cent by weight of sun­flower oil. All brands were within the spec­i­fied limit. Free­dom, Na­ture Fresh and For­tune Sun­lite were

found low­est in un­saponifi­able mat­ter.

Re­frac­tive in­dex (at 40 de­grees Cel­sius)

This is the ra­tio of the ve­loc­ity of light in vac­uum to the ve­loc­ity of light in the oil or fat. All brands were within the spec­i­fied limit. They were

clear and with­out any haziness.

Acid value

Re­quire­ment: 6.0 max­i­mum The acid value is the num­ber of mil­ligrams of potas­sium hy­drox­ide nec­es­sary to neu­tral­ize the free acids in one gram of sam­ple. All brands were within the spec­i­fied limit. Free­dom, Vi­jaya, Gemini and Sun­drop were found

with low­est acid value.

Arge­mone oil

Arge­mone oil is ex­tracted from arge­mone seeds. It is a kind of weed whose seeds look like mus­tard seeds and con­tains oil that is highly toxic. Con­sump­tion of this oil can lead to health dis­or­ders among chil­dren. Ed­i­ble-oil brands are obliged to men­tion ‘con­tains no arge­mone oil’ on their packs. Arge­mone oil was not de­tected in any brand.

Sus­pended par­ti­cles

This test is for de­tec­tion of any for­eign mat­ter or im­pu­ri­ties, which may form or in­fil­trate dur­ing the pro­cess­ing. These should be ab­sent, as for­eign mat­ter in oil re­duces its ac­cept­abil­ity to con­sumers and may re­sult in bad odour, and can also be harm­ful to con­sumer. All brands were free of sus­pended par­ti­cles.

Vis­i­bil­ity

All the brands were sub­jected to vis­ual ex­am­i­na­tion, to as­cer­tain if they were trans­par­ent and slightly pale-yel­low in colour, and with­out for­eign par­ti­cles. While dark pale-yel­low oily liq­uid showed in Gemini and Sun­pure, it was dark-yel­low in the case of Sun­drop and Free­dom. Healthy Heart was light paleyel­low, and the rest of the eight brands were a paleyel­low oily liq­uid.

Odour

All the oils were sub­jected to tests to ver­ify any off-odour/flavour. All brands were free of any ob­jec­tion­able odour.

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