Correlations between wet-milling characteristics of amaranth grain

Amaranth grains (Amaranthus cruentus) were air-dried at 40, 70 and 100 ºC and a moisture range from 29.5 to 10.2, dry basis (d.b.). Dried grains were wet-milled at 53.9ºC in the presence of SO2 aqueous solution in order to obtain fractions of starch, protein and fiber. Effect of drying temperature and SO2 concentration (0.01 0.05 w/v %) on fraction yields and protein content of starch were investigated using response surface method (RSM). A factorial design including triplicate of central point was performed. Starch and protein yields decreased as drying temperature increased while fiber yield and protein content in starch fraction shown the opposite behaviour. Protein yield and protein in starch fraction were affected negatively by SO2 concentration. Interaction among studied factors was only appreciable in fiber yield where a synergic effect was observed. The optimum conditions required to maximize starch together with the minimization of protein content in starch fraction included drying temperature of 40°C with amaranth soaking using 0.05 w/v % of SO2. These process conditions lead to 35.1 ± 1.4% of starch yield with a protein content of 1.93 ± 0.015%.

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Wet-Milling Characteristics of Selected Yellow Dent Corn Hybrids as Influenced by Storage Conditions

Cereal Chemistry ◽

10.1094/cchem.1998.75.2.235 ◽

1998 ◽

Vol 75 (2) ◽

pp. 235-240 ◽

Cited By ~ 8

Author(s):

V. Singh ◽

A. E. Haken ◽

Y. X. Niu ◽

S. H. Zou ◽

S. R. Eckhoff

Keyword(s):

Storage Conditions ◽

Wet Milling ◽

Corn Hybrids ◽

Dent Corn ◽

Milling Characteristics

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Heterosis in compositional, physical, and wet-milling characteristics of hybrids from exotic introgressed by adapted inbred lines in corn

10.31274/rtd-180813-17050 ◽

2007 ◽

Cited By ~ 1

Author(s):

Oswaldo R. Taboada-Gaytan

Keyword(s):

Inbred Lines ◽

Wet Milling ◽

Milling Characteristics

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Wet Milling Characteristics of Waxy Corn Hybrids Obtained from Different Planting Locations

Starch - Stärke ◽

10.1002/star.19960480906 ◽

1996 ◽

Vol 48 (9) ◽

pp. 335-337 ◽

Cited By ~ 4

Author(s):

Navpreet Singh ◽

Philip Buriak ◽

Ling Du ◽

Vijay Singh ◽

Steven R. Eckhoff

Keyword(s):

Wet Milling ◽

Corn Hybrids ◽

Milling Characteristics ◽

Waxy Corn

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Relative humidity effect on encapsulation properties of coproducts obtained from wet milling of amaranth grain

Biotecnoloía en el Sector Agropecuario y Agroindustrial ◽

10.18684/bsaa.v19.n1.2021.1501 ◽

2020 ◽

Vol 19 (1) ◽

pp. 32-44

Author(s):

Diego Fernando Roa Acosta ◽

Jhon Edinson Nieto Calvache ◽

Lina Marcela Agudelo Laverde

Keyword(s):

Glass Transition ◽

Transition Temperature ◽

Relative Humidity ◽

Wet Milling ◽

Humidity Effect ◽

Carotene Content ◽

Amaranth Grain ◽

Technological Potential ◽

Relative Humidity Effect ◽

Β Carotene

The co-products of the amaranth starch extraction have recently aroused the interest of the industry, mainly due to their functional characteristics. In this paper, the encapsulating efficiencies of starch-enriched fraction (SEF) and native starch (NS) obtained, respectively, by dry or wet milling were studied. The storage humidity effect (11 to 84%, 21 days) on β-carotene retention were evaluated. Significant effects of amaranth protein present in SEF matrix on emulsification and subsequent retention of β-carotene were found. The best encapsulation performance was showed by ball milled starch enriched fraction (SEF-BM) fraction, with up to three times of total β-carotene content in comparison with the NS containing matrices. The glass transition temperature (Tg) of the samples decreased with the increase in relative humidity due to the plasticizing effect of the water. The starch-enriched amaranth fraction showed a high technological potential as an encapsulating agent and its own protein content served as a good emulsifier-stabilizer.

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