Physico-chemical attributes and organoleptic assessment of guava (Psidium guajava L.) cultivars grown in eastern Uttar Pradesh

Abstract

A study was conducted to evaluate the different guava cultivars for their physico-chemical composition and organoleptic assessment during the year 2012-2013. Results of study indicated that Gorakh Bilas Pasand cultivar proved to be superior on the basis of physical characters (Length-7.64 cm, Breadth-7.79 cm , Weight-240.60 g, Number of seeds per fruit-251 etc.) followed by Lucknow-49. However, Lucknow-49 was found noteworthy in respect of chemical composition (TSS-13.00 oBrix, Acidity-0.50%, pH-5.86, Vitamin C-300.36 mg/100g etc). In organoleptic assessment, it was found that ‘liked very much’ rating was provided by consumer to Lucknow-49. On the basis of overall findings, it was concluded that ‘Lucknow-49’ was superior in most of characters studied and might be one of the promising cultivars for quality fruits under eastern Uttar Pradesh conditions.

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“…From the stock solution, five different test concentrations (viz., 25, 30, 35, 50, 75, 100ppm) were prepared and they were tested against the late third instar larvae of Aedes aegypti. The larvae of test species (25) were introduced in 500 ml plastic cups containing 100 ml of aqueous medium (99 mL of dechlorinated water + 1 mL of emulsifier) and the required amount of plant essential oil extract was added. The larval mortality was observed and recorded after 24 h of post treatment.…”

“…Thus, nutritionally guava fruit is a good choice for better health [23,24]. Guava fruit has high demand in preservation industry for preparation of jelly, candy, nectar and mixed jam due to its qualitative physico-chemical attributes and or-ganoleptic scores [15,25,26].The present study deals with chemical composition of essential oil and larvicidal activity.…”