DEVELOPMENT AND EVALUATION OF BASIL BASED HERBAL TEA
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Date
2022-01
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UHF,NAUNI
Abstract
ABSTRACT
The present investigation entitled “Development and evaluation of basil based herbal tea”
was carried out in the laboratory of the Department of Forest Products, College of Forestry, Dr YS
Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during 2020-21. Eight different
types of herbal teas were developed using different medicinal plants and examined in comparison
with two different market herbal teas for their physicochemical properties. The developed herbal teas
were evaluated for their total phenolic content, total flavonoid content, total polyphenolic content and
antioxidant properties through different assays. All the raw material used for the development of
herbal teas was also analyzed for their physicochemical properties. Out of the 8 different developed
herbal teas, the treatment T2 scored best with overall acceptability of 8.17 in the sensory evaluation as
compared to market herbal tea, with a score of 6.82. The treatment T2 showed highest total phenolic
content, total flavonoid content and total polyphenolic content as well. Five different antioxidant
evaluation assays viz. DPPH radical scavenging assay, nitric oxide scavenging assay, reducing power
assay, hydrogen radical scavenging assay and total antioxidant assay were used to evaluate the
antioxidant activity of developed herbal tea. The herbal teas tested in this study showed significant
antioxidant activities. The herbal tea T2 outperformed all the developed herbal teas and market herbal
teas in the antioxidant assays. The correlation values between the antioxidant assays and total
phenolic/flavonoid content showed that the teas which had the most augmented polyphenolic content
commensurated with the antioxidant capacity. The total phenolic content of treatment T2 was 201.13 ±
8.02 mg GAE/g which was very high in comparison to the market herbal tea i.e. 108.46 ± 5.13 mg
GAE/g. The total flavonoid content of treatment T2 was 138.97 ± 3.87 mg RE/g while that of market
tea was 69.23 ± 3.69 mg RE/g. From our results, it can be concluded that the developed basil based
herbal teas showed high total phenolic content, total flavonoid content, total polyphenolic content and
antioxidant activities, as compared to herbal teas procured from local market