Functional properties of turmeric (Curcuma longa) powder and physical properties of turmeric rhizomes grown in Ekiti State, Nigeria

M. A. Falabake, Idowu-Adebayo F. and, O. Oladimeji
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Abstract

Turmeric is a perennial herb possessing an ovate, orange and often short-branched rootstock that grows to about two feet in length. The study evaluated the physical and functional properties of powder of unpeeled (A) and peeled (B) turmeric rhizome grown in Ekiti State, Nigeria. Turmeric samples were obtained at selected local farms and market of Ekiti Central, Ekiti North and South, Nigeria. The results obtained for physical properties range from 0.44±10.02 to 0.62±11.01 g/cm3, 0.45±0.10 to 0.63±0.10 g/cm3, 1.59±0.10 to 2.22±0.09%, 5.50±0.04 to 8.00±0.04 mm, 1.60±0.03 to1.90±0.03 mm for bulk density, true density, porosity, length and breadth respectively. Also, the results of particle size analysis range from 71.72±0.10 to 87.37±0.10, 9.47±0.10 to 26.26±0.10 and 2.02±0.10 to 6.06±0.10 for sieve 425 micron (%RT), 180 micron (%RT) and 125 micron (%RT) respectively.   The functional properties include the pH that ranged from 7.24±0.10 to 7.41±0.09 for A; 6.72±0.10 to 7.04±0.10 for B, water absorption capacity (WAC) ranged from 30.84±0.10 to 42.94±0.10 for A; 41.04±0.10 to 51.25±0.09 for B. The results of functional properties of turmeric powder range from 6.72±0.10 to 7.04±0.09 and 30.84±0.10 to 51.25±0.09 for pH and water absorption capacities (WAC) respectively. The data obtained for physical properties will aid in the design of appropriate machinery for processing of turmeric plant, while the functional properties are to ascertain the health benefits as well as the utilisability of turmeric as a substitute for artificially produced drugs.
尼日利亚Ekiti州种植的姜黄粉末的功能特性和姜黄根茎的物理特性
姜黄是一种多年生草本植物,具有卵形,橙色,通常分枝短的砧木,可长至约两英尺长。该研究评估了尼日利亚Ekiti州种植的未去皮(A)和去皮(B)姜黄根茎粉末的物理和功能特性。在尼日利亚埃基蒂中部、埃基蒂北部和南部选定的当地农场和市场获得了姜黄样本。材料的容重、真密度、孔隙率、长度和宽度分别为0.44±10.02 ~ 0.62±11.01 g/cm3、0.45±0.10 ~ 0.63±0.10 g/cm3、1.59±0.10 ~ 2.22±0.09%、5.50±0.04 ~ 8.00±0.04 mm、1.60±0.03 ~ 1.90±0.03 mm。425微米(%RT)、180微米(%RT)和125微米(%RT)筛的粒度分析结果分别为71.72±0.10 ~ 87.37±0.10、9.47±0.10 ~ 26.26±0.10和2.02±0.10 ~ 6.06±0.10。A的pH值为7.24±0.10 ~ 7.41±0.09;B为6.72±0.10 ~ 7.04±0.10,A的吸水能力(WAC)为30.84±0.10 ~ 42.94±0.10;pH值为6.72±0.10 ~ 7.04±0.09,吸水量(WAC)为30.84±0.10 ~ 51.25±0.09。获得的物理特性数据将有助于设计适当的姜黄植物加工机械,而功能特性将确定姜黄的健康益处以及作为人工生产药物替代品的可用性。
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