scholarly journals Effect of buttermilk and skimmed milk powder on the properties of low-fat yoghurt

Author(s):  
Anna Garczewska-Murzyn ◽  
Michał Smoczyński ◽  
Natalia Kotowska ◽  
Katarzyna Kiełczewska

Abstract The aim of the study was to determine the potential of using buttermilk and skimmed milk powders as additives to standardize the dry matter content of milk in the production of low-fat yoghurt. A batch of yoghurt was produced using a starter culture of Lactobacillus delbruecki ssp. bulgaricus and Streptococcus thermophilus. The rates of milk acidification and pH levels were similar for both variants of yoghurt. After chilled storage (21 days), the yoghurt produced from milk supplemented with buttermilk powder was found to contain higher (P ≤ 0.05) levels of lactic acid (1.179%) than that supplemented with skimmed milk (1.154%). The use of buttermilk powder allowed reducing (not significantly, P > 0.05) syneresis in the stored yoghurt. The milk fat in the buttermilk–supplemented yoghurt showed lower (P ≤ 0.05) phospholipids content and exhibited slightly higher phospholipids loss during storage than the yoghurt produced from milk with addition of milk powder. No differences were found between the profile of fatty acids between the yoghurts enriched with skimmed milk powder and those enriched with buttermilk powder. Buttermilk can be used as an additive to produce a novel yoghurt type with modified functional features. Research Highlights The use of buttermilk powder did not affect fermentation process, however increased lactic acid content and water-holding capacity of yoghurt. The yoghurts with added buttermilk contained less phospholipids when compared with yoghurts supplemented with milk powder. Buttermilk powder can be incorporated as an ingredient in production of novel yoghurt type with improved functional features.

Author(s):  
Е.В. ТОПНИКОВА ◽  
О.В. ЛЕПИЛКИНА

Современные требования к рациональному питанию обусловливают производство жировых продуктов пониженной калорийности. Однако при их изготовлении производитель сталкивается с проблемами устойчивости процесса маслообразования, формирования структуры и качества продукта, решить которые возможно за счет использования стабилизаторов и эмульгаторов и корректировки режимов работы маслообразователя. С использованием программы онлайн-контроля изменения параметров работы маслообразователя и трансмиссионного электронного микроскопа при увеличении 6600 исследованы процессы формирования структуры и качества сливочного масла с жирностью 55%, выработанного из сливок с добавлением эмульгатора – моно- и диглицеридов жирных кислот в количестве 0,5% и комплексного стабилизатора консистенции на основе гуаровой и ксантановой камедей в количестве 0,2% – образец 1 и сухого обезжиренного молока, добавленного из расчета получения в готовом продукте 7,5% сухих обезжиренных веществ молока, – образец 2. Контрольным образцом было масло «Крестьянское» с жирностью 72,5%. Установлено, что процесс обращения фаз при изготовлении масла пониженной жирности происходит аналогично процессу при изготовлении масла с жирностью 72,5%. К особенностям процесса можно отнести формирование в качестве промежуточной структуры масляного зерна, а также повышение нагрузки на маслообразователь в момент переохлаждения сливок и удлинение продолжительности выхода на стабильный режима работы аппарата. Доказано, что для обеспечения устойчивой структуры продукта удельные затраты мощности должны быть увеличены на 9,8–13,2% при преобразовании сливок со стабилизаторами и эмульгатором (образец 1) и на 2,2–3,5% при преобразовании сливок с добавлением в качестве стабилизатора сухого обезжиренного молока (образец 2). Установлена возможность получения масла пониженной жирности с хорошей консистенцией и пластичностью. Modern requirements for rational nutrition determine the production of low-calorie fat products. However during their manufacture the manufacturer faces with problems of the stability of the butter formation process, the formation of the structure and quality of the product, which can be solved by using stabilizers and emulsifiers and adjusting the operating modes of the butter-forming agent. The processes of forming the structure and quality of butter with a fat content of 55% were studied using the online control program for changing the parameters of the butter-forming machine and transmission electron microscope at a magnification of 6600. Butter samples were developed from cream with the addition of an emulsifier – mono- and diglycerides of fatty acids in an amount of 0,5% and a complex consistency stabilizer based on guar and xanthan gum in an amount of 0,2% – sample 1 and skimmed milk powder added based on the calculation of obtaining 7,5% of skimmed milk solids in the finished product – sample 2. Butter «Krestyanskoe» with a fat content of 72,5% was the control sample. It is established that the process of phase reversal in the manufacture of low-fat butter is similar to the process for traditional types of butter. The formation of an intermediate structure of the butter grain, as well as the increased load on the butter-forming agent at the time of supercooling of cream and the lengthening of the duration of the stable mode of operation of the device can be attributed to the peculiarities of the process. It is proved that to ensure a stable product structure, the specific power consumption should be increased by 9,8–13,2% when converting cream with stabilizers and an emulsifier (sample 1) and by 2,2–3,5% when converting cream with the addition of skimmed milk powder as a stabilizer (sample 2). The possibility of obtaining low-fat butter with a good consistency and plasticity is established.


Author(s):  
Jakub Mieczysław Olipra

Butter and skimmed milk powder (SMP) are considered to be primary dairy commodities as they enable storage of fat and protein. The spread between butter and SMP prices in the European Union (EU) has been stable for many years. However, in 2016, butter prices suddenly increased to reach extremely high levels while SMP prices remained low. As a consequence, the price spread between milk fat and protein has surged, leading to severe imbalance in the EU dairy market. Some professionals argue that the main reason for this occurrence are large intervention stocks of SMP accumulated by the European Commission (EC) which weigh on prices. Nevertheless, no one has yet proved the existence of a causal relationship between the intervention stocks accumulated by the EC and the butter/SMP price spread. Hence, the purpose of this paper is to test that hypothesis. The causality between the EC intervention stocks and the butter/SMP price spread was tested using the Granger causality approach. The results show that the difference between butter and SMP intervention stocks accumulated by the EC Granger-causes the butter/SMP price spread while there is no causality in the opposite direction, which supports the hypothesis tested.


2017 ◽  
Vol 46 (4) ◽  
pp. 248-257 ◽  
Author(s):  
Dennis Bergmann ◽  
Declan O’Connor ◽  
Andreas Thümmel

Price and volatility transmission effects between European Union (EU) and World skimmed milk powder (SMP) prices, as well as those between both SMP series, soybeans and crude oil prices from 2004 to 2014 were analysed using a vector error correction model combined with a multivariate GARCH model. The results show significant transmission effects between EU and World SMP prices, but no significant transmission effects from soybeans or crude oil to either of the SMP prices. For policymakers and modellers, these results indicate the need to consider World SMP prices when considering EU prices. On the other hand, the finding of no transmission effects from soybean to SMP prices reduces the opportunity for a successful cross-hedging for dairy commodities using well-established soybean derivative markets.


Author(s):  
Shabbir Ahmed ◽  
Most Khairunnesa ◽  
Mst Habiba ◽  
Md Islam ◽  
S Hoque ◽  
...  

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Naukhaiz Abbas ◽  
Zainab Sharmeen ◽  
Shahid Bashir ◽  
Misbah Arshad ◽  
Zargham Mazhar

Peanuts may be consumed in a variety of processed forms like roasted, raw and processed etc. andrepresent as a multimillion dollar crop worldwide with many potential dietary benefits as it contains highprotein and health effective oils. Objective: The present investigation was planned to evaluate thephysio-chemical properties of peanut milk yogurt by the addition of different concentration of peanut milk(0 %, 10 %, 20 % and 30 %), skimmed milk liquid (60 %, 70 %, 80 %, and 90 %), skimmed milk powder (9 %)and sugar (1 %). Methods: The physio-chemical tests (pH, acidity, moisture, ash, fat, protein, syneresis,and viscosity) were examined after every 5 days of interval for a period of 15 days at 4 ºC. Results: Theresults of physio-chemical analysis revealed that pH, ash, fat, protein and viscosity decrease duringstorage period where as acidity, moisture and rate of syneresis increased during storage. Treatment T1(10 % peanut milk) was comparatively best for manufacturing of peanut milk yogurt followed by T2 (20 %peanut milk + 70 % skimmed milk liquid + 9 % skimmed milk powder + 1 % sugar) while peanut milk yogurtfrom (30 % peanut milk + 60 % skimmed milk liquid + 9 % skimmed milk powder + 1 % sugar) had the lowestdegree of firmness. Conclusions: It was noticed that correlation among fat, total solids and proteincontents in peanut milk affect the extent of serum separation and pH of yogurt. The storage hadsignificant effects on all physio-chemical parameters. Treatments had significant effect on all physiochemicalparameters.


2020 ◽  
Vol 8 (12) ◽  
pp. 6643-6659
Author(s):  
Muthu Mohamed Jamal Moideen ◽  
Ali Alqahtani ◽  
Krishnaraju Venkatesan ◽  
Fazil Ahmad ◽  
Kalpana Krisharaju ◽  
...  

2017 ◽  
Vol 34 (5) ◽  
pp. 475-487 ◽  
Author(s):  
Ana Kalušević ◽  
Steva Lević ◽  
Bojan Čalija ◽  
Milena Pantić ◽  
Miona Belović ◽  
...  

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