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This paper presents the implementation of a heterogeneous Hadoop cluster based on the Zynq ZedBoard development platform with GZIP FPGA offloading for high-speed and energy efficient computing. We have developed the first open source FPGA GZIP compressor, designed for educational and research purposes, that can reach 1 Gbps compression speed using a 125 MHz clock. The core uses only 10% of the Zynq-7020 SoC FPGA resources and is 5.7x faster than the ARM CPU which runs at 667 MHz. We implemented an eight-node Hadoop distributed cluster and performed the Wordcount and Terasort benchmarks using software and hardware GZIP compression during the Map stage. Results show an almost 2x more energy-efficient cluster when compression is done using our GZIP FPGA core than using the software compression. The performance of the Hadoop cluster is limited by the 512 MB of RAM and the low read-write speed of the SD cards which act as hard drives for each node.

The aim of this work was to substantiate the use of whey protein extract (WPE), a by-product of dairy industry, combined with different berry purees in the formulation of a whipped frozen dairy dessert (WFDD). After freezing, the swelling ability of WPE decreased significantly while at higher temperatures of the dispersion medium, the degree of swelling increased. A mixture containing 55±2 % WPE and 45±2 % milk presented a homogeneous consistency while the further processing did not improve the structure of the mixture. Final formulations of WFDD containing different berry purees (i.e. 10 % black¬currant puree, 25 % cherry puree, or 30 % strawberry puree) were proposed for which the nutritional facts were calculated. Recommended shelf life of the developed desserts at -18 °C is suggested to be 20 days. Regulatory requirements and recommendations for the production of WFDD in an industrial scale were also developed. Recommended shelf life of the developed desserts at -18 °C is suggested to be 20 days. In conclusion, a WFDD was developed using WPE as a by-product of dairy industry., Svrha ovog rada bila je ispitati mogućnost primjene kombinacije pirea bobičastog voća i ekstrakta proteina sirutke (WPE), inače nusproizvoda mljekarske industrije, u proizvodnji smrznutog mliječnog deserta (WFDD). Nakon smrzavanja, sposobnost bubrenja WPE značajno je pala, međutim pri višim temperaturama medija za raspršivanje sposobnost bubrenja ponovno je rasla. U pogledu konzistencije najboljom se pokazala mješavina koja se sastojala od 55±2 % WPE i 45±2 % mlijeka te daljnja prera¬da nije rezultirala poboljšanjem teksture mješavine. Za konačne recepture WFDD s različitim udjelima pirea bobičastog voća (10 % pirea crnog ribizla, 25 % pirea višnje ili 30 % pirea jagode) napravljeni su izračuni prehrambene vrijednosti. Preporučeni rok trajanja za proizvedene deserte iznosio je 20 dana na temperaturi čuvanja -18 °C. Osim toga, uspostavljeni su zahtjevi sukladno zakonskim propisima kao i odgovarajuće preporuke za proizvodnju WFDD u industrijskom mjerilu. Zaključno, razvoj proizvodnje WFDD uključuje primjenu nusprizvoda mljekarske industrije - WPE.

Once the new Serbian Regulation on the quality of fruit jams, jellies, marmalades and sweetened chestnut puree (101/2015) was issued, the former Regulation on the quality of fruit, vegetables, mushrooms and pectin preparations (01/79) ceased. Former Regulation was an excellent document, which had to be changed upon the harmonization of laws with European Union (EU). By interpreting the "old" regulations it is obvious that the share of fruit in the gelled product was very high, much higher than under the new regulation. The new Regulations of R. of Serbia recognize a categorization of the following nine products: jam, extra jam, jelly, extra jelly, marmalade, jelly marmalade, domestic marmalade ("domaća marmelada"), sweetened chestnut puree and pekmez. Domestic marmalade and pekmez weren't recognized in the Directive (2001/113/EC), but are result of harmonization of regulations and introduction of novelties that are specific to individual EU members. In terms of specific quality requirements, each of the nine groups is defined separately. The new Regulations (101/2015) define jam as a product containing some smaller portion of fruit (350g/kg), while the extra jam should not contain less than 450 g/kg of a fruit in the final product. It is noticeable that there are some distinctive differences relating the product quality in these two Regulations: jam and extra jam could contain a considerably smaller fruit content in the final product comparing the old regulations; the quality standards for domestic marmalade are the same as were for former marmalade. The quality is higher than quality of the best products of the other groups, such as extra jam. In case of domestic strawberry marmalade and strawberry extra jam, the fruit content of 800g/kg is almost twice times higher than of extra jam (450g/kg). U skladu sa Zakonom o bezbednosti hrane donet je "novi" Pravilnik o kvalitetu voćnih džemova, želea, marmelade, pekmeza i zaslađenog kesten pirea. Danom njegovog stupanja na snagu prestaje da važi "stari" Pravilnik o kvalitetu proizvoda od voća, povrća, pečurki i pektinskih preparata, u delu koji se odnosi na želirane proizvode. Izmene ovih propisa nisu bili rezultat zahteva struke ili potrošača za promenom, već su rezultat državnog opredeljenja za članstvom u Evropskoj uniji. Sadržaj suve materije morao je po "starim" propisima biti min. 65% za džem, odnosno min. 67% za marmeladu, pri čemu min. 6% mora poticati iz voća za džem, odnosno min. 7% za marmeladu. Po "novim" propisima sadržaj suve materije je min. 60%, osim za domaću marmeladu gde je min. 67%. Sadržaj voća se kod svih grupa kreće od 200g/kg do 450 g/kg, osim za domaću marmeladu od 350g/kg do 800g/kg. To jasno ukazuje da je i sadržaj šećera i sadržaj voća u finalnom proizvodu bio značajno viši po "starim" propisima nego po "novim" propisima. Upravo su to bili razlozi da se u "novim" propisima, usklađenim sa Evropskom unijom, uvede jedna nova grupa proizvoda koja će se zvati "domaća marmelada". Razlog za izdvajanje domaće marmelade od ostalih grupa je da se zadrži stari, prepoznatljiv i visok kvalitet proizvoda, a koji se nekada zvao samo marmelada.