ABSTRACT
This study aimed to determine the acceptability, profitability, and physicochemical and microbial properties of bottled juice made from lemongrass, avocado, and guava leaves in three different proportions. Laboratory testing conducted by PIPAC revealed that 100 ml of the bottled juice contains 0.1 g of dietary fiber, a pH level of 3.3 at 25°C, indicating low acidity, and a water activity level of 0.99 at 25°C, suggesting an acceptable level of microorganisms. The microbial analysis showed a Total Plate Count (TPC) of less than 250, indicating no detectable microorganisms in the sample, thus confirming the juice's nutritional value and safety. Acceptability and profitability were evaluated by three groups of respondents: young individuals, young adults, and adults. The study found varied evaluations among these groups regarding the product's acceptability and profitability.
Keywords: Acceptability; Profitability; Physicochemical analysis; Microbial analysis; Bottled juice; Lemongrass; Avocado leaves; Guava leaves.
1.0 Introduction
In our dynamic technological landscape, it is essential to remain informed and adaptable. Addressing the demands of science and technology requires a commitment to a healthy lifestyle, a trend accelerated by the pandemic. Many people have modified their lifestyle, including dietary habits, by incorporating leafy greens into their diets. This period of increased home time allowed individuals to prioritize their health and fitness goals, leading to a growing interest in alternative beverages that offer nutritional benefits derived from fruits and vegetables.
Green juice, primarily made from green vegetables and leaves such as kale, spinach, parsley, and lemongrass, has gained popularity due to its health benefits. According to Jacob (2022), green juice offers six potential health benefits: it is rich in nutrients, promotes hydration, aids in weight loss, improves digestive health, lowers inflammation, and is easy to digest. These leafy ingredients are crucial for a healthy diet, providing essential vitamins, minerals, and fiber while being low in calories. Consuming leafy greens can offer numerous health benefits, including reduced risks of obesity, heart disease, high blood pressure, and cognitive decline.
Lemongrass, for instance, is known for its health benefits, such as reducing bloating and preventing infection, although more large-scale studies are needed to confirm these benefits (Wilson, 2020). Lemongrass can be consumed as a juice or added to other dishes, like soups and sautés, enhancing flavor and nutritional value. Similarly, avocado leaves have been recognized for their health benefits. According to The Avo Tree blog (2020), avocado leaves are high in protein, fiber, and minerals, which support whole-body health. The dietary fiber in avocado leaves aids digestion and supports gut and metabolic health. Moreover, avocado leaves contain serotonin, which supports brain function and helps alleviate stress and anxiety.
Given the benefits of consuming lemongrass, avocado, and guava leaves, there is a trend toward developing new techniques to create healthy and tasty juices from these ingredients. This research was motivated by a preference for herbal beverages, particularly among juice enthusiasts who seek drinks derived from leaves or plants. This study aimed to produce juices that meet the standards for seniors, using lemongrass and avocado leaf extract to create a universally loved, affordable, and healthy beverage. Further, this study aims to determine the safety, acceptability, and profitability of bottled juice (containing lemongrass, avocado, and guava leaves) in three different extract proportions (15 ml, 30 ml, and 45 ml) among young people, young adults, and adults. This study aligns with the Philippine Innovation Act (2019) and DepEd Order No.13 s. 2017, which promotes the development of healthy eating and drinking habits among all age groups. Furthermore, DepEd Order No. 52, s. 2008, on food safety in schools, supports the need for healthier beverage alternatives to combat the excessive consumption of sodas.
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