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Histamine content in rennet ripening cheeses during storage at different temperatures and times 全文
2018
Madejska, Anna | Michalski, Mirosław | Pawul-Gruba, Marzena | Osek, Jacek
Histamine content in rennet ripening cheeses during storage at different temperatures and times 全文
2018
Madejska, Anna | Michalski, Mirosław | Pawul-Gruba, Marzena | Osek, Jacek
In recent years, there has been a great interest in biogenic amines such histamine, as they are associated with the quality and safety of some kinds of fermented foods. The aim of this study was to evaluate the effect of temperature and storage time on the content of histamine in cheeses. Samples of mould and hard cheeses were examined with RP-HPLC with an organic-aqueous mobile phase containing acidic buffer and chaotropic salt. The samples were stored either at 22 ± 2°C for 42 days (mould and hard cheeses) or at 4 ± 2°C for 112 days (mould cheeses) and 133 days (hard cheeses). The mean total histamine content in cheeses stored at 22°C was higher than the content in those stored at 4°C, with the highest concentrations found in Gorgonzola Piccante cheese (730.47 mg/kg). Histamine concentration in some types of cheeses exceeded the toxic threshold dose, indicating that after long or inadequately cool storage they may not be safe for consumers. To protect cheeses from contamination with histamine-producing bacteria and to safeguard consumers from poisoning, factors conducive to this amine’s formation should be minimised during cheese processing. Suitable temperature and time during storage of cheeses are recommended to avoid the intoxication. Monitoring of this toxin in food is necessary to ensure safety of consumers.
显示更多 [+] 显示较少 [-]Histamine content in rennet ripening cheeses during storage at different temperatures and times 全文
2018
Madejska Anna | Michalski Mirosław | Pawul-Gruba Marzena | Osek Jacek
In recent years, there has been a great interest in biogenic amines such histamine, as they are associated with the quality and safety of some kinds of fermented foods. The aim of this study was to evaluate the effect of temperature and storage time on the content of histamine in cheeses.
显示更多 [+] 显示较少 [-]Effect of probiotics in fermented palm kernel meal (FPKM) and total mixed ration (TMR) to improve milk production in Mafriwal dairy cattle of Malaysia Veterinary Institute (IVM) farm 全文
2018
Mohamad Noor I. | Norfadzrin F. | Haryani H. | Ahmad Malike H. | Sabariah B. | Saiful Adli A. H. | Aswanimiyuni A.
A preliminary study on the effect of probiotics in fermented palm kernel meal (FPKM) and total mixed ration (TMR) to improve milk production in dairy cattle was carried out. TMR feeding enhances feed intake, improves the ecology of the rumen leading to stimulated microbial activity to digest more feed, and then finally increases productivity of the cows. Probiotics ofBacillus spp. was given through concentrate after a fermentation process for three days. The trial was carried out at the Dairy Unit, Veterinary Institute, Kluang, Johore. Twenty Mafriwal cows with low milk production were selected and divided into twoequivalent groups. Each group consisted of 10 cows. Group A were fed with TMR. Group B received TMR and 100 grams perhead/day FPKM (FPKM, probiotics Bacillus spp. and mollases). The cows were given TMR daily which consisted of 20 kg per headof fresh Napier grass, 5 kg per head palm kernel meal, 1 kg per head soya bean meal, 1 kg per head corn, 0.5 kg per head molassesand 0.5 kg per head of enalac. Feeding trial period was carried out for four weeks. Feed was given twice a day, morning and lateafternoon, meanwhile water was given adlibitum. Animals were given the same diet for seven days for an adaptation period.Milk was sampled twice a day for four weeks and were recorded accordingly. The average of daily and weekly milk productionwere calculated. The animals from Group B showed an improvement of milk production before trial to the fourth week from 5.2litres/head/day to 6.99 litres/head/day i.e. 14.80% to 34.44% as compared to Group A.
显示更多 [+] 显示较少 [-]Продуктивность и естественные защитные силы организма телят при включении в рацион мультиферментной добавки Энзифид
2009
Mazolo, N.V., Vitebsk State Academy of Veterinary Medicine (Belarus)
There are the results of the scientific and economic experiment by the study of multifermentable supplement eniciencyin calves nutrition, it has been established that young animals with the supplementary ration by the and of the experiment have maintained the live weight on 11.4% higher compared with the control group of animals. The rate of natural phylactic power of an organism in young animals with the supplementary ration was considerably higher
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