Abstract：
:An initial laboratory-scale evaluation of separation characteristics of membranes with nominal molecular weight cut-offs (NMWCO) ranging from 30kD down to 0.5kD indicated effective separation of betalains in the 0.5kD region. Subsequent pilot-level trials using 1kD, loose reverse osmosis (LRO) and reverse osmosis (RO) spiral-wound membranes showed LRO membrane to be very efficient with up to 96% salt and 47% other dissolved solids removed while retaining majority of the pigment (∼98%) in the betalain rich extract (BRE). The total betalain content in the BRE increased up to 46%, the highest recovery reported so far at pilot scale level. Interestingly, more than 95% of the nitrates were removed from the BRE after the three diafiltrations. These studies indicate that membrane technology is the most efficient technique to produce BRE with highly reduced amounts of salts and nitrate content.
journal_name
Food Chemjournal_title
Food chemistryauthors
Mereddy R,Chan A,Fanning K,Nirmal N,Sultanbawa Ydoi
10.1016/j.foodchem.2016.07.132subject
Has Abstractpub_date
2017-01-15 00:00:00pages
311-7eissn
0308-8146issn
1873-7072pii
S0308-8146(16)31165-7journal_volume
215pub_type
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