Improving the safety and quality of jelly-fruit marmalade, recommendations for sweeteners

Relevance. Reduced calorie confectionery products, such as marmalade containing fruit raw materials, cocoa products, are included in the diet of consumers, are in high demand and are associated with healthy food products.

Methods. The aim of the work is to identify patterns of changes in the quality of jelly-fruit marmalade containing sweeteners erythritol and xylitol during storage. Apple puree was used as a fruit raw material. The sweeteners erythritol and xylitol are justified for partial replacement of white sugar. Samples of jelly-fruit marmalade with 50% replacement of white sugar with polyols were made in the laboratory. The production of marmalade included the preparation of agar-sugar syrup, the preparation of a semi-finished fruit product, the addition of sweeteners, modified starch, molasses, boiling the formulation mixture to a mass fraction of moisture of 18– 23%, the introduction of a 50% solution of citric acid, cooling to a temperature of 82–83 °C and molding by casting a mold. The samples were packed in a polypropylene film with a thickness of 35 microns and stored in a climatic chamber at a temperature of 18 °C and a relative humidity of 40% of the ambient air.

Results. The mass fraction of moisture, water activity, strength, taste, color, and smell of marmalade samples during storage were studied. It was determined that after 14 weeks of storage, the strength of the control sample increased by 2%, sample No. 1 — by 20.4%, samples No. 2, 3 — by 11.1% and 16.4%, respectively. The shape of the manufactured samples is correct, without the presence of body defects. It was found that the samples had high organoleptic properties, while the least moisture loss during the entire studied storage period was detected in sample No. 2 containing erythritol.

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