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Component analysis of nutritionally rich chloroplasts: recovery from conventional and unconventional green plant species

Author:
Gedi, Mohamed A., Briars, Rhianna, Yuseli, Felius, Zainol, Noorazwani, Darwish, Randa, Salter, Andrew M., Gray, David A.
Source:
Journal of food science and technology 2017 v.54 no.9 pp. 2746-2757
ISSN:
0022-1155
Subject:
alpha-linolenic acid, alpha-tocopherol, beta-carotene, biomass, chloroplasts, grasses, humans, ingredients, iron, leaves, lutein, manganese, minerals, nutrients, nutritive value, proteins, spinach
Abstract:
A study of the literature indicates that chloroplasts synthesise a range of molecules, many of which have nutritional value for humans, but the nutritional credentials of chloroplasts recovered from plant cells are not established. Chloroplast-rich-fractions (CRFs) were prepared from green plant species and the macro- and micro-nutrient composition compared with the whole leaf materials (WLMs). The results indicated that, on a dry weight basis, CRF material from a range of green biomass was enriched in lipids and proteins, and in a range of micronutrients compared with the WLM. Vitamins E, pro-vitamin A, and lutein were all greater in CRF preparations. Of the minerals, iron was most notably concentrated in CRF. Spinach CRFs possessed the highest α-tocopherol [62 mg 100 g⁻¹, dry weight (DW)], β-carotene (336 mg 100 g⁻¹ DW) and lutein (341 mg 100 g⁻¹ DW) contents, whilst grass CRFs had the highest concentration of alpha-linolenic acid (ALA) (69.5 mg g⁻¹). The higher concentrations of α-tocopherol, β-carotene, lutein, ALA and trace minerals (Fe and Mn) in CRFs suggested their potential use as concentrated ingredients in food formulations deficient in these nutrients.
Agid:
5799604