Three rice-type popcorns (red, white and yellow) and one pearl-type popcorn (yellow) were used in this study. All types were sized into three fractions (5 < D < 6 mm, 6 < D < 7 mm and D > 7 mm) by screening with round-hole sieves. Samples were tested for popping quality and suitability for popping, and the sensory properties of the popcorns were evaluated. A popcorn popper with a maximum operating temperature of 226°C was used for popping the samples (25 g). Both kernel type and size affected the expansion volume and the number of unpopped kernels. Yellow pearl-type (YPT) and white rice-type (WRT) popcorns showed good popping performance. The popping properties of the smallest-sized kernels were better than those of the other fractions. Popcorn type signi®cantly affected the¯ake size uniformity,¯ake shape uniformity,¯ake colour, crispness and taste of the products. Analysis of variance (ANOVA) and principal component analysis (PCA) showed that that kernel size was of great importance for the expansion volume, which was negatively correlated with number of unpopped kernels, 1000-kernel weight and diameter ratio and positively correlated with¯ake size, kernels per 25 g, crispness and tenderness.

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Response surface methodology was used to evaluate the effects of ingredients on popcorn popping characteristics. The effects of different ingredients on the expansion volume and unpopped kernel ratio of popcorn in a conventional popper and a microwave oven were evaluated and optimized by response surface methodology. The regression models were significant and had R 2 value in the range of 0.919-0.956. The optimum levels of ingredients for microwave popping were 4.4% salt, 5.9% vegetable oil, 0% sodium bicarbonate and 16.4% butter, this formulation giving an expansion volume of 33.1 mL g )1 . In the case of conventional popping, the maximum expansion volume of 37.3 mL g )1 was obtained for 3.5% salt, 6% vegetable oil, 0.10% sodium bicarbonate and 12.9% butter.

The effects of washing raw butter with hydrogen-rich water (HRW), prepared with hydrogen (H2) and/or magnesium (Mg), on butter quality were investigated in this research paper. During the washing process, titratable acidity (TA) decreased by 12% for all washed samples. During the storage period, TA increased by 28% and 93% (control), 14% and 58% (H2), and 10% and 66% (Mg) for the 60th and 90th days, respectively. Peroxide value (mEq O2/kg) increased to 2.76 and 8.83 (control), 1.92 and 7.25 (H2), and 2.02 and 8.12 (Mg) for the 60th and 90th days. HRW samples showed the lowest acid degree value (ADV) and the highest color notes (L*, C*, and h). The HRW treatment of raw butter has shown improving effects on the product without any harmful residuals in the final product or the environment.

Kofter is a traditional product which is composed of water, molasses and starch. The quality of Kofter depends on many factors involving concentration of the ingredients, starch concentration and type, composition and type of the molasses and drying temperature and time. In the present study, the effect of molasses concentration (75–25%) on the pasting and textural properties of the Kofter samples was investigated. All pasting properties (peak viscosity, trough viscosity, breakdown viscosity, final viscosity, setback viscosity, peak time, pasting temperature) were significantly affected by molasses concentration used in the formula. The increase in water concentration generally caused increase in hardness, adhesiveness, gumminess and chewiness value of the Kofter samples. Sensory analysis was also performed to determine mostly preferred sample regarding appearance, color, texture, taste, odor and overall preference. According to the sensory results, Kofter sample including 40% molasses and 60% water was found to be mostly preferred sample.

Malatya cheese is generally produced and consumed in Malatya province of Turkey.The starter culture is not used in the production of this cheese. It is traditionally made from raw cow or sheep milk or a mixture of them. This study aims to determine some characteristics parameters (the antioxidant activity, mineral composition, chemical, biochemical and textural properties) of Malatya cheese and therefore, 25 samples purchased from retail markets in Malatyawere analysed. The antioxidant capacity of the water-soluble extracts was detected using DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) methods, mineral composition of samples prepared by dry ash method were determined using Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES). This samples were generally different from each other according to the chemical, biochemical and textural properties; however, some interesting similarities were identified. Besides, the mineral compositions and antioxidant activities in cheese samples were determined higher than expected. In conclusions, the production method and ripening conditions may play a decisive effect on some basic properties of the cheeses investigated.