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by virtue of its starch content and its availability. There is a simple process of starch extraction from sago pith that leaches away a sufficient amount of the toxins and thus only the starch component is consumed. Current processes for starch extraction are generally only about 50% efficient,
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pith is generally present in young growth, but in the trunk and older branches the pith often gets replaced – in great part – by xylem. In some plants, the pith in the middle of the stem may dry out and disintegrate, resulting in a hollow stem. A few plants, such as
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The
American Watchmaker and Jeweler: A Full and Comprehensive Exposition of all the Latest and most Approved Secrets of the Trade Embracing Watch and Clock Cleaning and Repairing, Tempering in all its Grades, Making Tools, Compounding Metals, Soldering, Plating,
211:, have distinctive chambered pith with numerous short cavities (see image at middle right). The cells in the peripheral parts of the pith may, in some plants, develop to be different from cells in the rest of the pith. This layer of cells is then called
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to clean watch parts and tools. It is used to remove oil from the tips of tools to prevent the contamination of watch movements. A pith wood consists of a piece of pith (such as
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shoot cut longitudinally to show the broad, solid pith (rough textured, white) inside the wood (smooth, yellow tinged). Scale in millimeters.
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Mishima, Takashi (2018). "New Sago Palm Starch
Resources and Starch Pith Waste Properties". In Ehara, H.; Toyoda, Y.; Johnson, D. (eds.).
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While new pith growth is usually white or pale in color, as the tissue ages it commonly darkens to a deeper brown color. In
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Urry, Lisa A.; Cain, Michael Lee; Wasserman, Steven
Alexander; Minorsky, Peter V.; Orr, Rebecca B. (November 11, 2023).
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however, with the other half remaining in residual pith waste. The form of the starch after processing is similar to
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The term pith is also used to refer to the pale, spongy inner layer of the rind, more properly called
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Interdepartmental
Working Group on Biological Diversity for Food and Agriculture. p. 154.
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shoot cut longitudinally to show the chambered pith found in this genus. Scale in millimeters.
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palm, although highly toxic to animals in its raw form, is an important human food source in
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The tiny central dark spot (diameter: about 1 millimeter (0.039 in)) in this
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or other similar species, often mistakenly called pith, was once used to make
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Batello, Caterina; Marzot, Marzio; Touré, Adamou
Harouna (2004).
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Dried pith (which is actually the center of the leaf) of certain
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For the helmet used in tropical and subtropical climates, see
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The Watch & Clock Makers' Handbook, Dictionary and Guide
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Other foods sometimes mistakenly called piths include
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195:; the xylem, in turn, is encircled by a ring of
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122:Learn how and when to remove this message
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215:. An example of this can be observed in
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54:Please help
49:verification
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425:January 20,
366:rush plants
346:watchmaking
240:Old English
23:Pith helmet
570:Categories
376:References
280:Micronesia
236:hesperidia
177:parenchyma
82:newspapers
442:Sago Palm
370:rushlight
338:Pith wood
276:Melanesia
497:. Rome:
344:used in
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360:Light
350:elder
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251:pitte
242:word
204:trees
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183:. In
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139:Elder
103:JSTOR
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310:wood
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