Abstract
Purpose of our work: This work proposed some fresh nutraceutical drinks based on whey resulted from milk processing technology. For this we collected fresh whey from a milk plant from Timis County and we prepared some beverages based on whey – as the majority ingredient. As secondary ingredients we used fresh pineapple, fresh kiwi, fresh ginger, powdered cinnamon, powdered anise, and in some products we add honey.
Materials and methods: We proposed 4 different products with whey as a the majority ingredient: one beverage was prepared (blended) from whey, pineapple, and cinnamon; one with whey, pineapple, kiwi, and cinnamon; one with whey, pineapple, cinnamon, honey, ginger, and anise; and one prepared from whey, honey, and ginger. After 48 hours we analyzed the total content of lipids (Gerber method), acidity (Soxthlet-Henkel method), protein content (modified Steinegger method), dry matter and humidity (thermo-balance method).
Results: The total content of lipids was 0.00% in fresh whey, and was very low in all prepared samples (0.2-0.4%); acidity was 3.8°T for whey and varied between 5.8-18.8°T in prepared samples– depending on the fruit content; total protein was registered as 1.64g/100g for whey, with variations between 1.55-2.52g/100g product; fresh whey had the highest water content (95.69%), with variations between 86.19-91.96 for our proposed whey-drinks.
Conclusions: Whey is a valuable nutritional product that can be used for preparing fresh drinks with nutraceutical properties. Our preliminary data demonstrate that proposed drinks are very good for hydrating, being low in lipids and containing valuable and easy digesting proteins. Adding fresh pineapple, kiwi, ginger, honey and cinnamon to our products we improved the nutritive value of our products, especially by increasing the vitamins and minerals content. Also due to our ingredients we proposed four fresh nutraceutical products with very good antioxidant capacity.
Key words: whey, nutraceutical products
VALORIFICAREA ZERULUI ŞI OBŢINEREA DE PRODUSE NUTRACEUTICE - DATE PRELIMINARE
Rezumat
Scopul lucrării: Lucrarea propune obţinerea de produse nutraceutice pe bază de zer rezultat din tehnologia de procesare a laptelui. Pentru aceasta am colectat zerul proaspăt şi am pregătit câteva produse pe bază de zer - ca ingredient majoritar, iar secundar am folosit ananas, kiwi, ghimbir, scorţişoară, anason şi miere.
Materiale şi metode: Am preparat 4 produse diferite cu zerul ca ingredient majoritar: un produs a fost preparat din zer, ananas şi scorţişoară; unul cu zer, ananas, kiwi şi scorţişoară; unul cu zer, ananas, scorţişoară, miere, ghimbir şi anason; şi unul preparat din zer, miere şi ghimbir. După 48 de ore am analizat conţinutul total de lipide si proteine, aciditatea, conţinut de substanţă uscată şi umiditatea.
Rezultate: Conţinutul de lipide a fost de 0,00% în zerul proaspăt şi a fost foarte scăzut în toate probele preparate; aciditatea a fost de 3.8°T pentru zer şi a crescut până la 18.8°T în probele preparate din fructe; conţinutul de proteine a fost înregistrat ca 1,64% pentru zer, cu variaţii între 1,55-2,52%; zerul a avut cel mai mare conţinut de apă (95,69%), cu variaţii între 86,19-91,96 pentru produsele propuse.
Concluzii: Datele noastre preliminare demonstrează că produsele propuse sunt foarte bune pentru hidratare, fiind lipsite de lipide şi conţin proteine valoroase şi usor digerabile. Adăugând la produsele noastre ananas proaspăt, kiwi, ghimbir, miere şi scorţişoară am îmbunătăţit valoarea nutritivă a produselor noastre.