Treatment of Lupin Seed Using the Instantaneous Controlled Pressure Drop Technology to Reduce Alkaloid Content

2006 ◽  
Vol 12 (5) ◽  
pp. 365-370 ◽  
Author(s):  
J. Haddad ◽  
M. Muzquiz ◽  
K. Allaf
Keyword(s):  
Pressure Drop ◽  
Total Alkaloid ◽  
Lupinus Albus ◽  
Grain Legumes ◽  
Water Soluble ◽  
Alkaloid Content ◽  
High Protein Content ◽  
Lupinus Mutabilis ◽  
Lupin Seeds ◽  
Total Alkaloid Content

Despite their high protein content, lupin seeds are not as fully utilised as some other grain legumes. The drawback in their utilisation is mainly due to the presence of water soluble, poisonous alkaloids. In this study, an instantaneous controlled pressure drop (DIC) treatment followed by an aqueous extraction was performed on lupin seeds. Two species Lupinus albus and Lupinus mutabilis with different initial total alkaloid content of 0.025% and 5.5% (d.b.), respectively have been studied. Lupanine was the major alkaloid found in both lupin species. Experimental results proved the feasibility of using DIC treatment to reduce the alkaloid content of lupin seeds. Optimised DIC treatment combined with an adequate 2h soaking in water reduced the alkaloid content from 5.5% to 2.2% of L. mutabilis and from 0.025% to 0.0075% of L. albus.

Integrated Ultrasound-Mechanical Stirrer Technique for Extraction of Total Alkaloid Content from Annona muricata

2021 ◽  
Author(s):  
Chia Hau Lee ◽  
Lee Ting Hun ◽  
Pei Ying Ong ◽  
Syie Luing Wong ◽  
Norfadilah Hamdan ◽  
...  
Keyword(s):  
Total Alkaloid ◽  
Alkaloid Content ◽  
Annona Muricata ◽  
Total Alkaloid Content

THE ALKALOIDS OF LYCOPODIUM SPECIES: XIII. LYCOPODIUMDENSUM LABILL.

1953 ◽  
Vol 31 (10) ◽  
pp. 894-895 ◽  
Author(s):  
R. H. F. Manske
Keyword(s):  
Total Alkaloid ◽  
Alkaloid Content ◽  
Total Alkaloid Content

Lycopodiumdensum has yielded lycopodine and two apparently new alkaloids, L34, C16H25O2N, and L35, C14H21ON The total alkaloid content of the plant was less than 0.1%.

scholarly journals Effects of Sowing Date on Some Agronomic Characteristics and Alkaloid Content of Datura Stramonium in Semi-Arid Conditions

2016 ◽  
Vol 49 (1) ◽  
pp. 41-50
Author(s):  
S. Kizil ◽  
Ö. Tonçer
Keyword(s):  
Seed Yield ◽  
Total Alkaloid ◽  
Datura Stramonium ◽  
Sowing Date ◽  
Pharmaceutical Products ◽  
Alkaloid Content ◽  
Agronomic Characteristics ◽  
Thorn Apple ◽  
Total Alkaloid Content ◽  
Herb Yield

Abstract Alkaloids of diferent plant, including many Solanaceae species, constitute important natural sources for variety of pharmaceutical products. The amounts of various secondary plant products are strongly dependent on the growing conditions and agronomical applications such as planting date, fertilization, irrigation etc. The aim of this was to study the effects of sowing date on some agronomic characteristics and total alkaloid content of thorn apple (Datura stramonium), investigated in the environmental conditions from Dicle University, Agricultural Faculty, Field Crops Department experimental area, during 2010 and 2011 growing years. In the research, plant height, stem diameter, number of branches per plant, number of capsule per plant, capsule width, capsule length, 1000-seed weight, fresh herb yield, herba yield, seed yield and total alkaloid content were examined. At the end of the study, in the trial of thorn apple with sowing dates, according to two years mean, seed yield, fresh herb yield, dry herb yield and total alkaloid yield were changed between 335 kg ha−1 and 704 kg ha−1, 5933 and 20537 kg ha−1, 1613 kg ha−1 and 4800 kg ha−1, and 0.270% and 0.391%, respectively. The effect of sowing date was found significant on the investigated characteristics, when sowing delayed, agronomic characteristics were also decreased. The highest values related with seed yield, fresh and dry herbage of thorn apple were obtained sowing of 01 Apr. Moreover, thorn apple plant showed morphogenetic variation when compared leaf and seed alkaloid contents.

scholarly journals COLORIMETRIC VS. CHROMATOGRAPHIC ANALYSES OF ALKALOIDS IN LUPIN SEEDS

2018 ◽  
Vol 78 ◽  
pp. 63-67
Author(s):  
Paulina Wilczura ◽  
Wojciech Święcicki ◽  
Katarzyna Kamel ◽  
Wiesław Wasiak
Keyword(s):  
Bitter Taste ◽  
Lupinus Albus ◽  
Colorimetric Method ◽  
Dry Weight ◽  
Alkaloid Content ◽  
Estimation Methods ◽  
Material Development ◽  
Colorimetric Test ◽  
Lupin Seeds ◽  
Accurate Quantification

A characteristic trait of lupins is a production of alkaloids, which are a toxic and bitter taste compound ofseeds. Due to the lack of fast, sensitive and inexpensive screening techniques to identify and reject high alkaloidplant material, development of suitable tools is important challenges for lupins breeding and seed production.The aim of this study was to compare two alkaloid content estimation methods in Lupinus angustifoliusL. and Lupinus albus L.During the Wagner’s colorimetric test, which is recommended by the UPOV, seed halves were stained onfour colors depending on the alkaloid content but only the level of 0.5% – 0.6% showed clear color change.Gas chromatography allowed accurate quantification and qualification of alkaloid content.Since safe alkaloid content for consumption is 0.02% of seed dry weight, colorimetric method is less usefulfor dividing lupin cultivars into sweet and bitter, than gas chromatography but can be used as a screeningtechnique.

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