STUDIES ON CHANGES IN CHEMICAL PARAMETERS OF Zanthoxylum rhetsa DURING STORAGE
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Date
2022-11
Authors
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Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli
Abstract
Zanthoxylum rhetsa (Triphal) is an underutilized spice tree widely used by tribal healers for
many years to study the effect of different packaging materials on physico-chemical parameters of
Zanthoxylum rhetsa during storage at ambient temperature. Different packaging viz. Gunny bag
(Control), LDPE bags, HDPE bags, PET (polyethylene terephthalate) jars, Aluminium pouches
lined with polyethylene, shrink packaging, CFB boxes, Woven bags and brown paper bags were
used. After packing the samples were stored at ambient temperature and the samples were analysed
for both physico-chemical qualities at regular intervals of 2 months for a year.
The decrease in essential oil, sabinene and terpenen-4-ol content was observed during storage
along with a decrease in alcohol soluble extractive and water-soluble extractive. Other factors
showed a decrease with passage of time viz. Moisture and PLW, and size. Ash remains the same
without any changes throughout the storage whereas acid insoluble ash shows increasing trend.
The present study revealed that the Zanthoxylum rhetsa fruits (triphal) packed in the PET bottles
showed significant results. PET bottles could be used to store Z. rhetsa upto 12 months at ambient
condition. The moisture content of the Z. rhetsa at the end of storage period was 12.236%. The
physiological loss in weight was maintained through the storage period with an average of 2.22%.
The physico-chemical factors like essential oil was 1.301% , sabinene was 14.260%, and terpenen-
4-ol was 31.056% at 12 months. The ash percent 7.410%, acid insoluble ash 0.156%, alcohol
soluble extractive 11.460% and the water soluble extractive 12.893%. The fruit size (diameter in
mm) was 7.596 mm and colour value L* (16.461) a* (11.243), b* (15.424) was observed. Yeast
and mould growth was observed 0.183 cfu/g-1 at 12 months in PET.