Some studies of the chemistry and technology of soupfin shark liver oil

dc.contributor.authorLategan, Andries Willem
dc.contributor.authorLategan, Andries Willem
dc.date.accessioned2017-01-27T07:51:23Z
dc.date.available2017-01-27T07:51:23Z
dc.date.issued1946
dc.date.updated2016-11-22T11:39:28Z
dc.description.abstractDuring the past ten years the world demand for vitamin A has increased steadily. The increase is due partly to growing popularity of vitamin therapy and partly to the enormous rate at which vitamin A is being used in America for animal feeding. During the war years it has been used extensively for food fortification in England and Europe, and this will probably be continued for several years. It is very difficult to estimate the annual world consumption of vitamin A, but we know that in America 67 x 10¹² International Units (I. U.) were used in 1939. Approximately 60% of this quantity was used for animal feeding. We also know that in England the fortification of margarine is compulsory and that the diet of all school children is supplemented with vitamin A. The distribution of the world production of vitamin A was seriously disrupted by the war, when the Norwegian and Japanese productions were cut off from their normal destinations. Under these circumstances it is no wonder that the United States, Canada, South Africa, India and Australia made serious and successful attempts to produce fish liver oils, the main source of vitamin A. Argentina produced 25 x 10¹² U.S.P. units in 1945 and the United States 9 x 10¹³ U.S.P. units in the same year. The South African production increased from 2 x 10¹² I.U., valued at £80,000 in 1943, which year may be regarded as the birth of the South African industry, to 1 x l0¹³ I.U., valued at £400,000 in 1946-1947. There are four companies engaged in the production of fish liver oils in South Africa, and the success of this venture has probably provided the biggest impetus to our rapidly expanding fishing industry. This treatise deals with some aspects of the composition, characteristics, production, refining and storage of soupfin shark liver oil.
dc.identifier.apacitationLategan, A. W., & Lategan, A. W. (1946). <i>Some studies of the chemistry and technology of soupfin shark liver oil</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Chemistry. Retrieved from http://hdl.handle.net/11427/23561en_ZA
dc.identifier.chicagocitationLategan, Andries Willem, and Andries Willem Lategan. <i>"Some studies of the chemistry and technology of soupfin shark liver oil."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Chemistry, 1946. http://hdl.handle.net/11427/23561en_ZA
dc.identifier.citationLategan, A., Lategan, A. 1946. Some studies of the chemistry and technology of soupfin shark liver oil. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Lategan, Andries Willem AU - Lategan, Andries Willem AB - During the past ten years the world demand for vitamin A has increased steadily. The increase is due partly to growing popularity of vitamin therapy and partly to the enormous rate at which vitamin A is being used in America for animal feeding. During the war years it has been used extensively for food fortification in England and Europe, and this will probably be continued for several years. It is very difficult to estimate the annual world consumption of vitamin A, but we know that in America 67 x 10¹² International Units (I. U.) were used in 1939. Approximately 60% of this quantity was used for animal feeding. We also know that in England the fortification of margarine is compulsory and that the diet of all school children is supplemented with vitamin A. The distribution of the world production of vitamin A was seriously disrupted by the war, when the Norwegian and Japanese productions were cut off from their normal destinations. Under these circumstances it is no wonder that the United States, Canada, South Africa, India and Australia made serious and successful attempts to produce fish liver oils, the main source of vitamin A. Argentina produced 25 x 10¹² U.S.P. units in 1945 and the United States 9 x 10¹³ U.S.P. units in the same year. The South African production increased from 2 x 10¹² I.U., valued at £80,000 in 1943, which year may be regarded as the birth of the South African industry, to 1 x l0¹³ I.U., valued at £400,000 in 1946-1947. There are four companies engaged in the production of fish liver oils in South Africa, and the success of this venture has probably provided the biggest impetus to our rapidly expanding fishing industry. This treatise deals with some aspects of the composition, characteristics, production, refining and storage of soupfin shark liver oil. DA - 1946 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1946 T1 - Some studies of the chemistry and technology of soupfin shark liver oil TI - Some studies of the chemistry and technology of soupfin shark liver oil UR - http://hdl.handle.net/11427/23561 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/23561
dc.identifier.vancouvercitationLategan AW, Lategan AW. Some studies of the chemistry and technology of soupfin shark liver oil. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Chemistry, 1946 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/23561en_ZA
dc.language.isoeng
dc.language.isoeng
dc.publisher.departmentDepartment of Chemistryen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherChemistry
dc.subject.otherChemistry
dc.titleSome studies of the chemistry and technology of soupfin shark liver oil
dc.titleSome studies of the chemistry and technology of Soupfin Sharkliver oil
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhD
uct.type.publicationResearch
uct.type.resourceThesis
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