مجله علوم و صنایع غذایی ایران

مجله علوم و صنایع غذایی ایران

بررسی تأثیر متغیرهای زمان استراحت و اختلاط فوم بر پودر پاپریکا تولید شده با روش خشک کردن فوم به کمک مایکروویو

نوع مقاله : پژوهشی اصیل

نویسندگان
1 گروه علوم ومهندسی صنایع غذایی ،واحد تهران شمال،دانشگاه آزاد اسلامی،تهران،ایران.
2 گروه علوم و مهندسی صنایع غذایی، واحد شهرکرد، دانشگاه آزاد اسلامی، شهرکرد، ایران.
3 گروه علوم و مهندسی صنایع غذایی ، دانشگاه زابل، زابل، ایران.
4 گروه علوم و مهندسی صنایع غذایی، دانشگاه تبریز، تبریز، ایران.
10.48311/fsct.2026.83999.0
چکیده
در این پژوهش، برخی ویژگی‌های فیزیکوشیمیایی و کیفی پودر پاپریکا به روش خشک کردن فوم مت با مایکروویو تحت تاثیر دو متغیر مستقل زمان استراحت در محدوده (0تا20دقیقه) و اختلاط فوم (1تا10دقیقه) مورد بررسی قرار گرفت. در  این ارزیابی خصوصیات فوم حاصل از 10درصد مالتو دکسترین و 10 درصد کنسانتره پروتئین شیر و پودر (تعیین تخلخل، انبساط و رنگ)  و بهینه سازی فرآیند با استفاده از روش سطح پاسخ تعیین گردید.  نتایج بررسی نشان داد که میزان تخلخل فوم با کاهش زمان استراحت و افزایش زمان اختلاط در محدوده (058/0-090/0) افزایش معناداری را نشان داد (p≤0.05). این پاسخ بصورت خطی تحت تاثیر متغیرهای مستقل قرار گرفت و ضریب تبیین (R2) مدل برابر  97/0 شد. در حالی که میزان انبساط فوم (22/2- 84/13) بصورت خطی تحت تاثیر زمان اختلاط قرار گرفت و کاهش یافت. مقدار ضریب تبیین (R2) برای این پارامتر 57/0 حاصل شد که معناداری را در سطح 05/0 درصد نشان داد (p≤0.05). بر اساس نتایج حاصل برای پودر، تخلخل پودر با محدوده تغییرات (01/0-12/0) ومقادیر پارامترهای رنگیL*، a*، b*، BI و کروما به ترتیب (48/16-33/27)، (53/9-19/27)، (31/5- 87/13)، (53/79- 46/134) و (15/11- 34/30) شد که با کاهش زمان استراحت و افزایش زمان اختلاط افزایش یافتند. از آنجایی که مدل‌ها به طور رضایت‌بخشی به داده‌های تجربی برازش می‌کنند، می‌توان از آنها برای اهداف پیش‌بینی استفاده کرد. بررسی نتایج نشان داد که اثرات خطی و متقابل متغیرهای مستقل بر L*، a*،b*، BI و کروما، معنی‌دار شد (p≤0.05). ولی اثرات خطی و متقابل متغیرهای مستقل بر زاویه هیو غیرمعنی­داری را نشان داد (p≥0.05). بر اساس مدل­های پیشنهادی، زمان اختلاط بیشترین تأثیر را بر تمامی پاسخ‌ها به استثناء زاویه هیو دارد که بیشترین ضریب را در مدل پیشنهادی دارد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Investigating the Effect of Resting Time and Foam Mixing Variables on Paprika Powder Produced by Microwave-Assisted Foam Drying

نویسندگان English

somayeh sanjari banestsni 1
Nafiseh Jahanbakhshian 2
Sediqeh Soleimanifard 3
Maryam Khakbaz Heshmati 4
Zahra Beig Mohammadi 1
1 Department of Food Science and Technology, Tehran North Branch, Islamic Azad University, Tehran, Iran.
2 Department of Food Science and Technology, ShK.C., Islamic Azad University, Shahrekord, Iran.
3 Department of Food Science and Technology, University of Zabol, Zabol, Iran.
4 Department of Food Science and Technology University of Tabriz, Tabriz, Iran.
چکیده English

In this study, the physicochemical and qualitative properties of paprika powder were investigated using microwave foam drying, influenced by two independent variables: resting time (0–20 minutes) and foam mixing time (1–10 minutes). The foam was prepared with 10% maltodextrin and 10% milk protein concentrate, and the resulting powder was evaluated in terms of porosity, expansion, and color characteristics. Process optimization was performed using response surface methodology (RSM). The results indicated that foam porosity significantly increased (p ≤ 0.05) with decreasing resting time and increasing mixing time, ranging from 0.058 to 0.090. This response exhibited a linear relationship with the independent variables, with a high coefficient of determination (R² = 0.97). Conversely, foam expansion (ranging from 13.84 to 2.22) showed a significant linear decrease with increasing mixing time, with an R² value of 0.57 (p ≤ 0.05). For the resulting powder, porosity ranged from 0.01 to 0.12, and the values of the color parameters L*, a*, b*, browning index (BI), and chroma ranged from 16.48–27.33, 9.53–27.90, 13.31–87.13, 46.79–53.13, and 15.11–34.30, respectively. These parameters increased with decreasing resting time and increasing mixing time. The fitted models adequately represented the experimental data and can be used for predictive purposes. Significant (p ≤ 0.05) linear and interaction effects of the independent variables were observed for L*, a*, b*, BI, and chroma. However, the effects on the Hue angle were not statistically significant (p ≥ 0.05). Among all responses, mixing time had the most pronounced effect, except for the Hue angle, which showed the highest coefficient in its respective model.

کلیدواژه‌ها English

Paprika powder
milk protein concentrate
maltodextrin
foam mat
microwave
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