The aim of this study was to develop a probiotic beverage using whey and Watermelon juice Lactobacillus acidophilus was used as the probiotic organism. Optimization of the probiotic watermelon beverage as well as the establishment of a sensory profile by using chemical, microbiological, and quantitative descriptive analysis. For best blend optimization, we used RSM 6.0 trial software. Fermentation time using 1 per cent inoculum of L. acidophilus was optimized on the basis of RSM trial version, The 65:35 blend ratio of whey and watermelon juice fermented for 24 hrs. gave desirable results with highest sensory scores for overall acceptability and a total viable count of more than 106 cfu ml-1.beverage kept for 20 days below refrigerated temp and 120 hrs. at ambient temperature for the analysis for sensory and changes in titrable acidity, pH, total viable count.
Table of Contents
1. Introduction
2. Material and Method
2.1 Collection of milk sample & separation of whey
2.2 Formulation of developed beverage
2.3 Inoculums preparation
2.4 Probiotic beverage preparation
2.5 Fermentation
2.6 Storage
2.7 Analytical method
2.8 Statistical analysis
3. Analysis of data
4. Result and discussion
4.1 Experimental design
4.2 Adequacy of models for different references
4.3 Response surfaces developed to observe the effect of process parameters on response parameters
4.4 Optimization of growth conditions for Lactobacillus acidophilus in probiotic beverage development
5. Conclusion
Research Objectives and Themes
The primary objective of this study is to develop a functional probiotic beverage using a blend of whey and watermelon juice, optimized through the application of Response Surface Methodology (RSM). The research aims to establish an ideal fermentation process using Lactobacillus acidophilus to ensure product quality, sensory acceptability, and probiotic viability under various storage conditions.
- Optimization of whey and watermelon juice blending ratios.
- Application of RSM for process parameter control (sucrose, stabilizer, juice concentration).
- Evaluation of sensory profiles (consistency, flavor, color, appearance).
- Assessment of microbiological and physicochemical storage stability.
Excerpt from the Book
OPTIMIZATION OF GROWTH CONDITIONS FOR LACTOBACILLUS ACIDOPHILUS IN PROBIOTIC BEVERAGE DEVELOPMENT
Variations in fermentation time and medium were studied in terms of overall acceptability of the beverage, total viable counts, pH and titratable acidity. Whey supplemented with 11% sucrose was fermented for different time intervals with the addition of watermelon juice. The effect of Lactobacillus acidophilus on sensory attributes of whey with watermelon juice and pectin during fermentation has been shown above. Color and appearance of the beverage was significantly affected by the incubation period. The mean scores for color and appearance ranged from 8.92 to 6.53 for whey with beverage. The mean score was highest (8.92) for whey fermented beverage for 5 h. The sensory scores for consistency reduced significantly with increase in fermentation time for whey-watermelon juice blend. The sensory score for consistency of fermented whey ranged from 8.55 to 6.66. The sensory scores for consistency of fermented whey watermelon juice blend ranged from 8.69 to 6.04. The sensory scores for color and appearance ranged from 8.64 to 6.63 for fermented whey-watermelon juice blend. The mean score for flavor decreased significantly with increasing fermentation time irrespective of the medium.
The mean score for overall acceptability ranged from 8.72 to 5.22 of whey-watermelon juice blend. Highest score for overall acceptability was seen in case of whey-watermelon juice blend fermented for 5 h.
Summary of Chapters
1. Introduction: Provides an overview of the role of probiotics in functional foods and the rationale for developing whey-based beverages.
2. Material and Method: Details the procurement of raw materials, the specific laboratory processes for whey extraction, inoculum preparation, and the statistical design used for optimization.
3. Analysis of Data: Explains the mathematical and statistical models, specifically the second-order polynomial response models, used to evaluate the experimental results.
4. Result and discussion: Presents the findings regarding the optimization of process variables and the impact of different factors on the sensory and physicochemical characteristics of the beverage.
5. Conclusion: Summarizes the study's success in achieving optimized product parameters and highlights the high palatability and nutritional value of the final beverage.
Keywords
Whey, Probiotic beverage, Watermelon whey beverage, Storage stability, Lactobacillus acidophilus, Response Surface Methodology, Fermentation, Physicochemical analysis, Sensory profile, Sucrose, Pectin, Titratable acidity, Total viable count, Optimization, Functional food.
Frequently Asked Questions
What is the core focus of this research?
The study focuses on creating a new, nutritious, and acceptable probiotic beverage by blending whey with watermelon juice, using specific optimization techniques.
What are the central thematic areas?
The work covers food science, biotechnology, dairy technology, and the application of statistical design (RSM) to optimize food product formulation.
What is the primary research goal?
The primary goal is to find the optimal concentration of ingredients and fermentation time that result in a highly palatable probiotic drink with stable storage properties.
Which scientific method is utilized?
The study employs Response Surface Methodology (RSM) along with ANOVA to analyze the impact of independent variables like watermelon juice, sugar, and stabilizers on the final product.
What is covered in the main section?
The main sections cover the material collection, the step-by-step formulation of the beverage, the statistical analysis of the experimental results, and the influence of storage conditions on the product.
Which keywords characterize this work?
Key terms include Probiotic beverage, Whey, Watermelon juice, Fermentation, Lactobacillus acidophilus, and Response Surface Methodology.
Why was whey used as a base material?
Whey was used to leverage its nutritional properties and to explore its application as a base for probiotic beverages, serving as an alternative to traditional dairy products.
What role does the Design-Expert 6.0 software play?
The software is used to perform the Response Surface Methodology (RSM) calculations to identify the optimal levels of watermelon juice, sugar, and pectin for the best sensory results.
What did the storage stability analysis reveal?
The analysis showed how sensory attributes and microbial counts changed over 20 days under refrigeration and over 120 hours at ambient temperatures.
- Citar trabajo
- Prabhakar Shukla (Autor), 2014, Probiotication of beverages using whey and watermelon juice, Múnich, GRIN Verlag, https://www.grin.com/document/281381
