Job offersmore »
- General Manager - Australia
- Purchasing Specialist Exoten - Netherlands
- Intercompany Key Account Manager Exoten - Netherlands
- Buitendienst Medewerker - Oost Nederland
- Managing Grower - Australia
- Senior Grower - Talbotville, Ontario, Canada
- Operations Manager - Fresh Produce
- Senior Account Manager Retail - Netherlands
- Supply Allocation and Inventory Manager - Fresh Produce, Italy
- Senior Grower - Katunga, Australia
Top 5 - yesterday
Top 5 - last week
- Research into potential of Feijoas to become Australia's next 'superfood'
- Australia: NSW melon farm speaks out on listeria outbreak
- OVERVIEW GLOBAL SWEET POTATO MARKET
- California's heavy rain highlights benefits of hydroponic strawberries
- Corona branded limes to be available in the Beer & Liquor aisle
Top 5 - last month
- OVERVIEW GLOBAL AVOCADO MARKET
- Costa Rica: Government accused of ignoring organic pineapple issue
- Organic food consumption continues to increase in Europe
- California grape grower-shipper publishes first Corporate Social Responsibly Report
- Spain: About 20,000 tonnes of stone fruit damaged by frost in Murcia
Exchange ratesmore »
White kiwis peel like bananas and have a higher vitamin C content'White' kiwis (Actinidia eriantha Benth.) are a new cultivar that was registered in China and that have a higher L-ascorbic acid (AsA - between 5.69 and 11.37 g/kg of fresh weight) compared to other cultivars. L-ascorbic acid is commonly known as vitamin C.
White kiwis could be popular for their high grades, nice flavour and for the fact they peel like bananas!
Researchers from the Zhejiang Gongshang University in Hangzhou (China) analysed changes in AsA, related metabolites, enzymatic activity and the gene expression associated with Asa biosynthesis and recycling process. Results showed that Asa biosynthesis through L-galactose pathway supplemented by D-galacturonic acid pathway and Asa recycling collectively contributed to accumulating and maintaining a higher Asa level in the White cv during the post-harvesting phase.
In addition, L-galactose dehydrogenase (GalDH) activity and the relative expressions of the genes that encode GDP-D-mannose pyrophosphorylase (GGP), GaIDH and D-galacturonate reductase (GaIUR) were important to regulate AsA biosynthesis. The activity and expression of dehydroascorbate reductase (DHAR) were primarily responsible for AsA recycling in White kiwis during post-harvesting.
These genes could be suitable for the nursing and selection of new cultivars with a higher Asa content during post-harvesting until over-ripening.
Source: Zhen-Ye Jiang, Yu Zhong, Jian Zheng, Maratab Ali, Guo-Dong Liu, Xiao-Lin Zheng, 'L-ascorbic acid metabolism in an ascorbate-rich kiwifruit (Actinidia. Eriantha Benth.) cv. 'White' during postharvest', 2018, Plant Physiology and Biochemistry.
Publication date: 2/15/2018
Receive the daily newsletter in your email for free | Click here
Other news in this sector: