Effect of beeswax and chemicals on storage behavior of baramasi lemon (Citrus limon L. Burm)
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Date
2021
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Punjab Agricultural University, Ludhiana
Abstract
The present investigation entitled “Effect of beeswax and chemicals on storage behavior of
baramasi lemon (Citrus limon L. Burm)” was conducted in the Department of Fruit Science,
Punjab Agricultural University, Ludhiana during the year 2020. Mature light green and
uniform fruits of baramasi lemon cv. PAU Baramasi Lemon-1 were harvested and treated
with naphthalene acetic acid (50, 100 and 150 ppm), gibberellic acid (50, 100 and 150 ppm),
sodium nitroprusside (1, 2 and 4 mM) & 2% beeswax alone and also coated with beeswax @
2% containing similar concentrations of all these chemicals. Treated fruits were packed in
corrugated fibre board (CFB) boxes (5% perforation) with paper lining before storage at 6-8℃
and 90-95% relative humidity for 60 days. Fruits were analyzed on 20, 40 and 60 days of
storage for various physico-chemical characteristics. Results revealed that physiological loss
in weight, L* & b* colour coordinates, spoilage, total soluble solids, total sugars, reducing
sugars and non reducing sugars increased with advancement of storage period. However,
other parameters like peel thickness, vitamin C content, total antioxidants, total phenolics
content, total flavonoids content, β-carotene content and hydroxyl radical scavenging activity
showed a declining trend with the progression of storage period. Whereas, juice content,
sensory quality rating and titratable acidity showed an increasing trend during initial stages of
storage, but at later stages a decline was noticed. The fruits coated with beeswax @ 2%
combined with naphthalene acetic acid @ 50 ppm acid or gibberellic acid @ 50 ppm or
sodium nitroprusside @ 1 mM were found to moderately to very much desirable upto 60 days
of storage . Beeswax @ 2% combined with gibberellic acid @ 50 ppm was highly effective in
extending storage life of baramasi lemon fruits under low temperature storage conditions by
reducing the physiological loss in weight, spoilage and maintaining higher content of vitamin
C, titratable acidity, juice, total antioxidants, total phenolics, total flavonoids, β-carotene and
hydroxyl ion scavenging activity during entire storage period as compared to other treatments.
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Citation
Jaismeen Kaur (2021). Effect of beeswax and chemicals on storage behavior of baramasi lemon (Citrus limon L. Burm) (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.