QUANTIFICATION OF LUPEOL IN SELECTED COMMERCIAL/POPULAR CULTIVARS OF MANGO (Mangifera indica L.)
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Date
2017-07-24
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College of Horticulture, Rajendranagar, HYD-30
Abstract
The mango (Mangifera indica L.) is a juicy stone fruit (drupe) and also one of the most important climacteric tropical fruits in the world. It is designated as “King of fruits” and “National fruit of India”. A study was taken up to investigate “Quantification of lupeol in selected commercial/popular cultivars of mango (Mangifera indica L.)” was conducted at Fruit Research Station, Sangareddy and MFPI- Quality Control Laboratory, PJTSAU, Rajendranagar during the year 2016-2017. The experiment was carried out in Factorial Completely Randomized Design
with two replications. In this study discussed about mainly quantification of lupeol in 12 commercial mango cultivars (table and juicy cultivars) of dried pulp during 3 storage days (4th, 8th, 12th) at ambient conditions and also study the effect on physicochemical parameters during storage days (4th, 8th, 12th). Correlation between lupeol and other parameters recorded.
The results showed that, among the 12 mango (table and juicy) cultivars significantly decreased in fruit firmness, DA meter reading, titrable acidity and Vitamin C during storage days (4th, 8th and 12th day) at ambient temperatures. Among the 12 cultivars high fruit firmness of 6.83±0.95 kg/cm2 was recorded in Baneshan, while lowest in Mahamooda Vikarabad (4.08±0.71 kg/cm2). High DA reading of 1.40±0.10 was recorded in Navaneetham, while lowest DA meter reading of 0.71±0.13 was ntoiced in Mulgoa. High acidity of 0.66±0.03 % Vanraj while, lowest in Mahamooda Vikarabad (0.18±0.04 %). High Vitamin C of 17.60±0.81mg/100g was recorded in Vanaraj, while lowest in Allampur Baneshan (13.92±0.87 mg/100g). Among the storage days (4th, 8th and 12th day) significantly maximum fruit firmness, DA reading, acidity and Vitamin C were recorded on 4th day of storage, while minimum on 12th day of storage.
The study revealed that significant differences among the 12 cultivars (table and juicy) in case of l*, a* and b* values, high l* Value of 62.90±3.80 was recorded in Baneshan while low in Pandurivari Mamidi 47.00±1.20. High a* value was recorded in Vanraj 12.71±4.26 while low in Navaneetham (0.41±2.74). High b* values were recorded in Baneshan (51.60±5.00), while low in Navaneetham (32.90±4.20). Colour score l*, a* and b* values were significantly increased from 4th day to 8th in case of l* and b* values while a* values were increased up to12th day.
The results of physicochemical parameters viz. Lupeol, TSS, PH, Total sugars, Reducing sugars and Non reducing sugars were found to be significant among the 12 cultivars (table and juicy cultivars) and storage days (4th, 8th and 12th day of storage). Among the 12 cultivars high lupeol content was recorded in Chinnarasam 67.22±11.09 μg/100g, while lowest was noticed in Himayath (8.27±0.94 μg/100g). High TSS (22.34±0.38 ° B), total (9.68±0.14 %) and reducing sugars (5.96±0.05%) were recorded in Himayath, while PH and non reducing sugars were higher in Mahamooda Vikarabad (5.0.3±0.04) and Navaneetham (4.03±0.26 %) respectively. While, low TSS (Baneshan 14.80±0.28 ° B), PH (Totapari 4.15±0.20), total sugars (Mulgoa 6.56±0.12%) and reducing sugars (totapari 4.04±0.01%) and non reducing sugars (Mulgoa 2.41±0.09%). Among the storage days significantly maximum amount of TSS, total sugars, reducing and non reducing sugars recorded on 8th day of storage while pH on 12th day of storage.
The interaction between 12 mango (table and juicy cultivars) cultivars and 3 storage days (4th, 8th and 12th day of storage) shown to be significant in all physicochemical parameters.
Correlation study revealed that, significantly (p>0.05%) positive correlation between luepol and TSS on 4th day of storage.
As evident from the study, promising lupeol content was noticed among the cultivars and there is lot of variation in the content level of lupeol (μg/100g) among
cultivars and it ranged from 8.27±0.94 μg/100g (Himayath) to 67.22±11.09 μg/100g (Chinnarasam). Among the storage days highest lupeol content was recorded on 8th day of storage. Maximum lupeol content was recorded in table cultivars when compared to juicy cultivars except Chinnarasam.
Description
As evident from the study, promising lupeol content was noticed among the cultivars and there is lot of variation in the content level of lupeol (μg/100g) among
cultivars and it ranged from 8.27±0.94 μg/100g (Himayath) to 67.22±11.09 μg/100g (Chinnarasam). Among the storage days highest lupeol content was recorded on 8th day of storage. Maximum lupeol content was recorded in table cultivars when compared to juicy cultivars except Chinnarasam.
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Citation
Sri Konda Laxman Telangana State Horticultural University, Rajendranagar, Hyderabad-30