Faculty of Agricultural Sciences and Food
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Item type:Publication, Possibility of extending shelf life of cevapcici(Institute of Meat Hygiene and Technology — Belgrade, Serbia, 2025) ;Belichovska Daniela ;Pejkovski Zlatko ;Silovska Nikolova Aleksandra ;Belichovska KaterinaLevkov VesnaThe shelf life of cevapcici in which chemical additives were substituted with biopreservatives was examined. Bioprotective culture B-2 SafePro (Lactobacillus sakei) in freeze‑dried form and the herb mixture, Oregano Plus, composed of oregano (Origanum vulgare L. ssp. Viridis) and savory (Satureja montana L.), were used. Three types of cevapcici were produced: with B-2 SafePro (control); with Oregano Plus, and; with both B-2 SafePro and Oregano Plus. pH, grilling weight loss, chemical composition, sensory characteristics, thibarbituric acid reductive substances (TBARS), and microbiological profile were investigated in all cevapcici treatments. The pH decreased in all treatments after 7 days’ storage at 0–4 ℃. Cevapcici with B-2 SafePro had a significantly (P<0.05) lower pH than the other two treatments after cold storage. A statistically significant negative correlation between pH and grilling weight loss of cevapcici was found (P<0.01). Consequently, the highest weight loss during grilling was found in cevapcici that contained B-2 SafePro. Products that contained both B-2 SafePro and Oregano Plus had the most acceptable sensory attributes three days after production. However, in cevapcici with B-2 SafePro (compared with the other two products), all sensory properties were significantly (P<0.05) better seven days after production. After frozen storage, significantly (P<0.05) lower TBA‑numbers in the cevapcici with Oregano Plus indicate that this herb mixture has evident antioxidative effects. Products with B-2 SafePro had the highest total bacteria count, as a result of intensive growth and development the L. sakei. After 7 days’ storage at 0–4 ℃, the most expressive effect against Enterobacteriaceae was detected in cevapcici with Oregano Plus compared with the other two producs. Generally, it can be concluded that the addition of the oregano and savory mixture results in cevapcici that are microbiologically safe and have extended shelf life - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of vegetable fats and oils on sensory characteristics of processed chicken frankfurter-style sausages(Institute of Meat Hygiene and Technology, 2009) ;Pejkovski Zlatko ;Silovksa NIkolova Aleksandra ;Belichovska Katerina ;Gaspelin LeaPolak Tomas - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Impact of different vegetable fats and oils on instrumentally measured color and texture of processed chicken sausages(Tehnologija mesa, 2009) ;Pejkovski Zlatko ;Silovksa NIkolova Aleksandra ;Belichovska Katerina ;Gasperlin LeaPolak TomasThe effect of vegetable fats and oils on instrumentally measured color and texture of processed chicken sausages was investigated using six variants of sausages: control, containing pork back fat (Po); olive oil (O); rapeseed oil (R); sunfower oil (S); palm fat (Pa) and a mixture (Mi) of 60 % rapeseed oil (R) and 40 % palm fat (Pa). Palm (Pa) fat resulted in the darkest (p 0,05) surface color of processed poultry sausages. High intensity red color was most desirable on the sausage surface and was obtained with palm (Pa) fat and a mixture (Mi) of 60% palm fat and 40% rapeseed oil (R). Incorporation of all other plant oils and fats increased yellowness on the surface of processed poultry frankfurters. Palm (Pa) and pork (Po) fat, that are rich in saturated fatty acids, (p 0.05) darkened color on poultry sausages at the fresh cross sectional plane. Pork (Po) fat also (p 0.05) improved the red color hue at the fresh cross section plane of sausages. Plant oils, when not used in a mixture with palm fat (p 0.05) increased the Warner Bratzler Shear Force (WBSF) making the product harder and rmer in texture. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, MORFOMETRISKI KARAKTERISTIKI, MASOV SOSTAV I ISHRANA NA OHRIDSKATA BELVICA (ACANTHOLINGUA OHRIDANA, STEINDACHNER)(Faculty of Agricultural Sciences and Food, University Ss. Cyril and Methodius in Skopje, 2010-06-16)Belichovska KaterinaSo cel da se utvrdat biometriskite i morfometriskite karakteristiki, masoviot i tkivniot sostav, osnovniot hemiski sostav na mesoto i ishranata na ohridskata belvica (Acantholingua ohridana, Steindachner, 1892), izvr{eni se istra`uvawa na edinki loveni vo periodite na vegetativnata, odnosno na reproduktivnata faza na razvitok na belvicata, na tri lokaliteti na Ohridskoto Ezero: Kali{ta, Kaneo i Ele{ec, na dlabo~ina od 45 do 70 m. Ispitanite edinki se so prose~na telesna masa od 90 do 100 g i so prose~na totalna dol`ina na teloto od 217 do 225 mm. Utvrdeno e deka vrednosta na Fultonoviot koeficient kaj belvicata, od trite ispituvani lokaliteti na Ohridskoto Ezero, e zna~ajno (R<0,05) povisoka vo vegetativnata vo sporedba so reproduktivnata faza na razvitok. Razlikite vo vrednostite na Klarkoviot koeficient se mali i statisti~ki bezna~ajni. Meristi~kite karakteristiki na belvicata mo`at da se opi{at so slednive formuli: D III–V 8–10, A III–IV 7–9, V I–II 8–9, P I 11–12, C 18 –21; l.l. 13-16‡104- 115‡13-18; sp. br. 1621; vert. 4753; app. int. 28‡56 (40). Pova`nite morfometriski karakteristiki na belvicata izrazeni vo procenti od dol`inata na teloto spored Smitt iznesuvaat: standardna dol`ina na teloto 93,49, dol`ina na trupot 72,80, dol`ina na glavata 20,68, dol`ina na opa{noto steblo 16,98, najgolema visina na teloto 22,29, najmala visina na teloto 7,99, najgolema {irina na teloto 12,36, predorzalno rastojanie 41,65, postdorzalno rastojanie 37,56, preanalno rastojanie 66,88 i preventralno rastojanie 50,09. Randmanot kaj belvicata e signifikantno (R<0,05) povisok vo periodot na vegetativnata vo sporedba so reproduktivnata faza na razvitok. U~estvoto na vnatre{nite organi i oddelno na gonadite vo vkupnata masa na ribata e zna~ajno (R<0,01) pogolemo vo reproduktivnata faza, a na digestivniot trakt e signifikantno (R<0,05) pogolemo vo vegetativnata faza na razvoj na belvicata. Razlikite me|u fazite na razvitok na belvicata vo zastapenosta na mesoto i na koskite vo trupot se minimalni i statisti~ki bezna~ajni. Mesoto od belvicata sodr`i zna~ajno pove}e (R<0,01) proteini i masti, a pomalku voda vo vegetativnata vo sporedba so reproduktivnata faza na razvitok. Razlikata vo sodr`inata na mineralnite materii e nezna~itelna. Bruto i neto energetskata vrednost na mesoto e signifikantno (R<0,01) povisoka vo vegetativnata faza. Vo tekot na vegetativnata i vo tekot na reproduktivnata faza od razvitokot na belvicata dominantno mesto vo nejzinata ishrana zazema zooplanktonot, so stroga selekcija na vidot Daphnia pulex, a potoa elementi od faunata na dnoto, so najgolema zastapenost na vidovi od rodot Gammarus. Zastapenosta na elementite od bentosot e zna~itelno pogolema vo tekot na reproduktivnata otkolku vo vegetativnata faza. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Споредбени испитувања на морфометриските карактеристики и составот на трупот на виножитната и речната пастрмка(Факултет за земјоделски науки и храна, Универзитет Св. Кирил и Методиј во Скопје, 2006-12-08)Belichovska KaterinaSo cel da se utvrdat eventualnite razliki vo morfometriskite karakteristiki, masoviot sostav na teloto (soodnosot na oddelnite delovi i organi na teloto), tkivniot sostav na trupot (sodr`inata na meso i koski) i hemiskite osobini na mesoto na vino`itnata (obi~na i `olta) i re~nata pastrmka, izvr{eni se istra`uvawa na ribi odgleduvani vo dva ribnika so ~ista izvorska voda. Izborot na edinkite za ispituvawe e izvr{en na slu~aen na~in od proizvodnite bazeni na ribnicite, pritoa vodej}i smetka da bidat so pribli`no ednakva telesna masa. Ispituvanite edinki bea so prose~na telesna masa od 184 do 222 g. Konstatirano e deka, vo morfometriskite karakteristiki na pastrmkite, odnosno vo procentualnoto u~estvo na oddelnite delovi vo vkupnata dol`ina na teloto, ima minimalni i statisti~ki nezna~ajni razliki me|u obi~nata i `oltata vino`itna pastrmka. U~estvoto na malata dol`ina, dol`inata na trupot i na opa{noto steblo vo golemata dol`ina na teloto na re~nata pastrmka e ne{to pomalo, a u~estvoto na dol`inata na glavata i na opa{nata perka pogolemo vo sporedba so vino`itnata pastrmka. Me|utoa, razlikite se mali i statisti~ki bezna~ajni. Randmanot na meso (riba bez vnatre{ni organi) e signifikantno (R<0,05) povisok kaj re~nata i `oltata, vo sporedba so obi~nata pastrmka. U~estvoto na glavata vo vkupnata masa na teloto e zna~ajno pogolemo kaj re~nata, vo sporedba so vino`itnata pastrmka. Vo odnos na u~estvoto na masata na perkite i na vnatre{nite organi, vo vkupnata masa na ribata, ne se utvrdeni zna~ajni razliki me|u pastrmkite. Re~nata pastrmka i `oltata vino`itna sodr`at zna~ajno (R<0,05) pogolemo koli~estvo meso vo trupot vo sporedba so obi~nata vino`itna pastrmka. U~estvoto na ko`ata vo masata na trupot e zna~ajno pogolemo kaj obi~nata vo sporedba so `oltata vino`itna i re~nata pastrmka. Vo rN-vrednosta na mesoto ne se utvrdeni zna~ajni razliki me|u ispituvanite pastrmki. Mesoto na `oltata vino`itna pastrmka sodr`i signifikantno (R<0,05) pomalku voda, a pove}e masti i ima povisoka energetska vrednost, vo sporedba so mesoto na obi~nata vino`itna i re~nata pastrmka.
