Some physical properties of Australian Nonpareil almonds related to bulk storage  

作　　者：Zheng Dingke John Fielke 

机构地区：[1]College of Engineering,South China Agricultural University,Guangzhou 510642,China [2]Barbara Hardy Institute,School of Engineering,University of South Australia,Mawson Lakes,SA 5095,Australia

出　　处：《International Journal of Agricultural and Biological Engineering》2014年第5期116-122,共7页国际农业与生物工程学报（英文）

基　　金：part of the HAL Project(AL12003)Advanced Processing of Almonds;funded by Horticulture Australia Limited using the almond levy,voluntary contributions from industry and matched funds from the Australian government.

摘　　要：The Australian almond industry desires to improve storage of harvested almonds awaiting processing.The present work quantified some storage-related physical properties of almonds.The sample used in the study was Nonpareil almonds with a kernel moisture content of 4.5% d.b.The mass composition of the sample was 55% hull,32% kernel and 13% shell.Tests showed that the bulk stored in-shell almonds had only 41% of the volume of in-hull almonds and 45% of the mass.Thus removing hulls before storage would result in saving both storage and subsequent transportation costs.Tests simulating various storage heights of almonds showed that a 10 m storage height of almonds increased the bulk density of in-hull almonds from 320 to 355 kg/m^(3),of in-shell almonds(hull removed)from 356 to 378 kg/m3,and kernels(hull and shell removed)from 604 to 649 kg/m^(3).A 10 m storage height of almonds reduced the porosity of in-hull almonds from 67% to 64%,of in-shell almonds from 58% to 55%,and of the kernel from 48% to 44%.Observation showed that the change in bulk density and porosity occurred in an exponential manner with fitted curves that provided R2 between 0.97 and 0.99.

关 键 词：ALMOND storage bulk density true density porosity kernel in-hull in-shell 

分 类 号：S66[农业科学—果树学]