Question

Name some of the preservatives which are used in the preservation of fruits as jams arid jellies.

Answer 1

Techniques like sweetening (adding sugar) , drying the food material are used for preservation of dry fruits or jams, jellies and chemical preservatives like sodium benzoate and sodium metabisulphite are used to preserve jams.

Answer 2

Sugar

Explanation:

Sugar is used a preservative for food. In northern climates without sufficient sun to dry foods, preserves are made by heating the fruit with sugar. Sugar tends to draw water from the microbes. This process leaves the microbial cells dehydrated, thus killing them. In this way, the food will remain safe from microbial spoilage.

Sugar is used to preserve fruits, either in an antimicrobial syrup with fruit such as apples, pears, peaches, apricots, and plums, or in crystallized form where the preserved material is cooked in sugar to the point of crystallization and the resultant product is then stored dry. This method is used for the skins of citrus fruit (candied peel), angelica, and ginger. Sugaring is used in the production of jam and jelly.