To­tal Sol­u­ble Solids (TSS)

Consumer Voice - - Pineapple Jam -

To­tal sol­u­ble solids are solids that are dis­solved within a sub­stance. A com­mon to­tal sol­u­ble solid is sugar. The to­tal mass of a jam is made up of in­gre­di­ents like sugar, fruit pulp, pectin, preser­va­tives, salt, food colour and other sol­u­ble solids present nat­u­rally or added in com­bin­ing form. All of these make the ‘to­tal sol­u­ble con­tents’ of a jam. High to­tal sol­u­ble con­tents do not nec­es­sar­ily de­note high fruit pulp since sugar, pectin and other preser­va­tives also in­crease the amount of to­tal sol­u­ble con­tents.

As per Food Safety and Stan­dards (FSS) Reg­u­la­tions, to­tal sol­u­ble solids should not be less than 65.0 per cent in jam. Pineap­ple jam shall be man­u­fac­tured from not less than 45 per cent, by weight, of pre­pared pineap­ple, ex­clu­sive of any added sugar. As lab­o­ra­to­ries can­not de­tect ac­cu­rate per­cent­age of fruit in jam, we opted for test­ing of to­tal sol­u­ble solids in jam. TSS con­tent in all brands was found to be above the pre­scribed le­gal limit. High­est TSS was found in Kis­san (72.42 per cent), and the low­est in Dana (68.40 per cent). Ba­si­cally, it is the fruit con­tent and the qual­ity of the fruit that de­ter­mines the qual­ity of the jam.

Yeast is a type of fungi. Yeast is com­monly found on plants, grains, fruits and foods con­tain­ing sugar. They are trans­ferred from place to place by peo­ple,

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