Extraction of bioactive compounds from Psidium guajava leaves and its utilization in preparation of jellies
Psidium guajava (guava) is predominantly grown in India and known for its medicinal properties in treating various diseases and disorders. The present work focuses on aqueous extraction of bioactive compounds from the guava leaf and its utilization in the formulation of jelly to improve the public health. The guava leaf extract has been used in the preparation of jelly with pectin (1.5 g), sugar (28 g) and lemon juice (2 mL). The prepared guava leaf extract jelly (GJ) and the control jelly (CJ, without extract) were subjected to proximate, nutritional and textural analyses besides determination of antioxidant and antimicrobial activities. GJ was found to contain carbohydrate (45.78 g/100 g), protein (3.0 g/100 g), vitamin C (6.15 mg/100 g), vitamin B3 (2.90 mg/100 g) and energy (120.6 kcal). Further, the texture analysis of CJ and GJ indicated that both the jellies showed similar properties emphasizing that the addition of guava leaf extract does not bring any change in the texture properties of jelly. GJ exhibited antimicrobial activity against various bacteria ranging from 11.4–13.6 mm. Similarly, GJ showed antioxidant activity of 42.38% against DPPH radical and 33.45% against hydroxyl radical. Mass spectroscopic analysis of aqueous extract confirmed the presence of esculin, quercetin, gallocatechin, 3-Sinapoylquinic acid, gallic acid, citric acid and ellagic acid which are responsible for antioxidant and antimicrobial properties.
Figure 1
Figure 2
Figure 3
This is a list of supplementary files associated with this preprint. Click to download.
Posted 11 Dec, 2020
On 31 Dec, 2020
Received 22 Dec, 2020
Received 18 Dec, 2020
Received 17 Dec, 2020
Received 17 Dec, 2020
On 16 Dec, 2020
On 16 Dec, 2020
On 09 Dec, 2020
Invitations sent on 09 Dec, 2020
On 09 Dec, 2020
On 07 Dec, 2020
On 07 Dec, 2020
On 07 Dec, 2020
On 05 Dec, 2020
Extraction of bioactive compounds from Psidium guajava leaves and its utilization in preparation of jellies
Posted 11 Dec, 2020
On 31 Dec, 2020
Received 22 Dec, 2020
Received 18 Dec, 2020
Received 17 Dec, 2020
Received 17 Dec, 2020
On 16 Dec, 2020
On 16 Dec, 2020
On 09 Dec, 2020
Invitations sent on 09 Dec, 2020
On 09 Dec, 2020
On 07 Dec, 2020
On 07 Dec, 2020
On 07 Dec, 2020
On 05 Dec, 2020
Psidium guajava (guava) is predominantly grown in India and known for its medicinal properties in treating various diseases and disorders. The present work focuses on aqueous extraction of bioactive compounds from the guava leaf and its utilization in the formulation of jelly to improve the public health. The guava leaf extract has been used in the preparation of jelly with pectin (1.5 g), sugar (28 g) and lemon juice (2 mL). The prepared guava leaf extract jelly (GJ) and the control jelly (CJ, without extract) were subjected to proximate, nutritional and textural analyses besides determination of antioxidant and antimicrobial activities. GJ was found to contain carbohydrate (45.78 g/100 g), protein (3.0 g/100 g), vitamin C (6.15 mg/100 g), vitamin B3 (2.90 mg/100 g) and energy (120.6 kcal). Further, the texture analysis of CJ and GJ indicated that both the jellies showed similar properties emphasizing that the addition of guava leaf extract does not bring any change in the texture properties of jelly. GJ exhibited antimicrobial activity against various bacteria ranging from 11.4–13.6 mm. Similarly, GJ showed antioxidant activity of 42.38% against DPPH radical and 33.45% against hydroxyl radical. Mass spectroscopic analysis of aqueous extract confirmed the presence of esculin, quercetin, gallocatechin, 3-Sinapoylquinic acid, gallic acid, citric acid and ellagic acid which are responsible for antioxidant and antimicrobial properties.
Figure 1
Figure 2
Figure 3