Influence of growing location, harvesting season and post-harvest storage time on carotenoid biosynthesis in orange sweet potato (Ipomoea batatas) tuber flesh
Carotenoid content in plants differs due to several factors such as cultivar, maturity, climate, locality and storage. Improving the nutritional values of sweet potato is an important breeding goal and understanding the regulation, genetics and inheritance of carotenoid biosynthesis are vital to...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Faculty of Food Science & Technology, Universiti Putra Malaysia (UPM)
2017
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/57446/ http://irep.iium.edu.my/57446/ http://irep.iium.edu.my/57446/1/57446_Influence%20of%20growing%20location%20%281%29.pdf http://irep.iium.edu.my/57446/7/57446_Influence%20of%20growing%20location_scopus.pdf |
| Summary: | Carotenoid content in plants differs due to several factors such as cultivar, maturity, climate,
locality and storage. Improving the nutritional values of sweet potato is an important breeding
goal and understanding the regulation, genetics and inheritance of carotenoid biosynthesis are
vital to achieve this. Environmental conditions can have a marked influence on the accumulation
of carotenoids in sweet potato tubers. Little is known about the effects of location, post-harvest
storage time and harvesting season particularly on carotenoid biosynthesis. Therefore, this
study aimed to investigate the effects of growing location, harvesting season and storage time
on carotenoid biosynthesis in orange sweet potato tuber flesh. The results showed that orange
sweet potato tubers contained α-carotene and β-carotene in the first and second harvesting
season (year 2011 and 2012), whereas lutein and zeaxanthin were detected only in the third
harvesting season (year 2013). Analysis of carotenoid profiles of the orange sweet potato tubers
grown in three different locations confirmed that the harvesting season had a major effect on
the total carotenoid content and the individual carotenoid compounds. The post-harvest storage
time of sweet potato tubers also appears to have distinct effects on carotenoid biosynthesis, the
magnitude of the effects being dependent on the storage time, harvesting season and location.
The results of this study will help to understand the effects of location, year of harvesting
season and storage time on carotenoid accumulation in orange sweet potato tubers. |
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