Head of Xilonen, Goddess of Young Maize A.D
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Effect of Alkaline Soaking and Cooking on the Proximate, Functional and Some Anti-Nutritional Properties of Sorghum Flour
AU J.T. 14(3): 210-216 (Jan. 2011) Effect of Alkaline Soaking and Cooking on the Proximate, Functional and Some Anti-Nutritional Properties of Sorghum Flour Ocheme Ocheme Boniface and Mikailu Esther Gladys Food Science and Nutrition Department, Federal University of Technology Minna, Nigeria E-mail: <[email protected]; [email protected]> Abstract The effect of nixtamalization on the functional, proximate, and anti-nutritional properties of sorghum flour was studied. Flour samples were produced from soaked sorghum grains and cooked sorghum grains. A portion of sorghum grains were soaked in water and 1% lime solution for 24 hours and some were cooked for 30 minutes in both water and 1% lime solution. At the end of soaking and cooking, the grains were sundried; milled; sieved with a 0.25 mesh screen; and packaged. Alkaline cooking of sorghum resulted in flour with significantly higher protein; water and oil absorption capacity; pH; hygroscopicity; phytate and trypsin inhibitor and significantly lower ash; tannins and cyanide content than flours from untreated and water treated sorghums, while alkaline soaking resulted in flour with significantly higher carbohydrate; water and oil absorption capacity; and pH and significantly lower packed bulk density and hydrogen cyanide than flours from untreated and water treated sorghum. Keywords: Nixtamalization, functional properties, anti-nutritional properties, soaking, cooking. Introduction Unleavened bread (tortilla) is a common food in central and South America produced from Nixtamalization refers to a process of sorghum cooked in lime solution (Asiedu preparing maize (corn) in which the grain is 1989). In nixtamalization, dried cereal grains cooked and soaked in alkaline solution, usually are cooked in an alkaline solution at or near its lime solution, and then dehulled (Ocheme et al. -
Stone-Boiling Maize with Limestone: Experimental Results and Implications for Nutrition Among SE Utah Preceramic Groups Emily C
Agronomy Publications Agronomy 1-2013 Stone-boiling maize with limestone: experimental results and implications for nutrition among SE Utah preceramic groups Emily C. Ellwood Archaeological Investigations Northwest, Inc. M. Paul Scott United States Department of Agriculture, [email protected] William D. Lipe Washington State University R. G. Matson University of British Columbia John G. Jones WFoasllohinwgt thion Sst atnde U naiddveritsitiony al works at: http://lib.dr.iastate.edu/agron_pubs Part of the Agricultural Science Commons, Agronomy and Crop Sciences Commons, Food Science Commons, and the Indigenous Studies Commons The ompc lete bibliographic information for this item can be found at http://lib.dr.iastate.edu/ agron_pubs/172. For information on how to cite this item, please visit http://lib.dr.iastate.edu/ howtocite.html. This Article is brought to you for free and open access by the Agronomy at Iowa State University Digital Repository. It has been accepted for inclusion in Agronomy Publications by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. Journal of Archaeological Science 40 (2013) 35e44 Contents lists available at SciVerse ScienceDirect Journal of Archaeological Science journal homepage: http://www.elsevier.com/locate/jas Stone-boiling maize with limestone: experimental results and implications for nutrition among SE Utah preceramic groups Emily C. Ellwood a, M. Paul Scott b, William D. Lipe c,*, R.G. Matson d, John G. Jones c a Archaeological -
Knowledge of Skull Base Anatomy and Surgical Implications of Human Sacrifice Among Pre-Columbian Mesoamerican Cultures
See the corresponding retraction, DOI: 10.3171/2018.5.FOCUS12120r, for full details. Neurosurg Focus 33 (2):E1, 2012 Knowledge of skull base anatomy and surgical implications of human sacrifice among pre-Columbian Mesoamerican cultures RAUL LOPEZ-SERNA, M.D.,1 JUAN LUIS GOMEZ-AMADOR, M.D.,1 JUAN BArgES-COLL, M.D.,1 NICASIO ArrIADA-MENDICOA, M.D.,1 SAMUEL ROMERO-VArgAS, M.D., M.SC.,2 MIGUEL RAMOS-PEEK, M.D.,1 MIGUEL ANGEL CELIS-LOPEZ, M.D.,1 ROGELIO REVUELTA-GUTIErrEZ, M.D.,1 AND LESLY PORTOCArrERO-ORTIZ, M.D., M.SC.3 1Department of Neurosurgery, Instituto Nacional de Neurologia y Neurocirugia “Manuel Velasco Suárez;” 2Department of Spine Surgery, Instituto Nacional de Rehabilitación; and 3Department of Neuroendocrinology, Instituto Nacional de Neurologia y Neurocirugia “Manuel Velasco Suárez,” Mexico City, Mexico Human sacrifice became a common cultural trait during the advanced phases of Mesoamerican civilizations. This phenomenon, influenced by complex religious beliefs, included several practices such as decapitation, cranial deformation, and the use of human cranial bones for skull mask manufacturing. Archaeological evidence suggests that all of these practices required specialized knowledge of skull base and upper cervical anatomy. The authors con- ducted a systematic search for information on skull base anatomical and surgical knowledge among Mesoamerican civilizations. A detailed exposition of these results is presented, along with some interesting information extracted from historical documents and pictorial codices to provide a better understanding of skull base surgical practices among these cultures. Paleoforensic evidence from the Great Temple of Tenochtitlan indicates that Aztec priests used a specialized decapitation technique, based on a deep anatomical knowledge. -
Crediting Coconut, Hominy, Corn Masa, and Masa Harina in the Cnps
2 Martin Luther King Jr. Drive, SE, Suite 754, East Tower, Atlanta, GA 30334 (404) 656-5957 Brian P. Kemp Amy M. Jacobs Governor Commissioner MEMORANDUM To: Institutions and Sponsors Participating in the Child and Adult Care Food Program (CACFP) and the Summer Food Service Program (SFSP) From: Sonja R. Adams, Director of Provider Services – Nutrition (Original Signed) Date: September 13, 2019 (v.2) Subject: Crediting Coconut, Hominy, Corn Masa, and Masa Harina in the CNPs Legal Authority: USDA Policy Memorandum SP-34-2019, CACFP 15-2019, SFSP 15-2019, August 22, 2019 (rescinding SP 22-2019, CACFP 09-2019, SFSP 08-2019, Crediting Coconut, Hominy, Corn Masa, and Corn Flour in the CNPs, April 17, 2019; SP 02-2013, Corn Masa (Dough) for Use in Tortilla Chips, Taco Shells, and Tamales, October 3, 2012; and TA 01-2008, Crediting of Corn Meal (Cornmeal) and Corn Flour for Grains/Breads Component, December 11, 2007). Cross Reference/ See also: DECAL Policy Memorandum, Update of Food Crediting System to Include Various Food Items Which Were Previously Uncreditable, December 28, 2018. This policy memorandum rescinds and replaces DECAL Policy Memorandum, Crediting Coconut, Hominy, Corn Masa, and Corn Flour in the CNPs, May 17, 2019. As stated above, this memorandum rescinds and replaces DECAL Policy Memorandum, Crediting Coconut, Hominy, Corn Masa, and Corn Flour in the CNPs, May 17, 2019 which was based on expanded Food and Nutrition Service (FNS) policy guidance originally released on December 4, 2018. 1 Such guidance sought to inform participating institutions and sponsors of the credibility of various food items which were previously uncreditable. -
Additional Creditable Foods
Michigan Office 139 W. Lake Lansing Rd., Suite 120 • East Lansing, MI 48823 Telephone: (800) 234-3287 • FAX: (517) 332-5543 Illinois Office 4415 W. Harrison St., Suite 535 • Hillside, IL 60162 Telephone: (800) 284-5273 • FAX: (708) 236-0872 www.acdkids.org Additional Creditable Foods COCONUT • Fresh, frozen, or dried coconut is creditable as a fruit by volume. Coconut flour and coconut • Dried coconut credits as twice the volume served. Unsweetened oil are not creditable. dried coconut is preferable due to less added sugars (ex. ¼ cup dried coconut credits as ½ cup of fruit). • At least ¹/8 cup must be served. Additional fruit should be served to meet the minimum serving sizes. • Coconut water labeled as 100% juice credits as juice by volume and counts towards the juice limit of once per day. CORN PRODUCTS Corn Masa, Masa Harina, Nixtamalized Corn Flour/Cornmeal • Corn Masa and Masa Harina are creditable as Whole Grain- Nixtamalizaion: a process in Rich (WGR) grains. which corn is soaked in an alkaline • Cornmeal, corn flour and corn products* treated with slaked slaked lime solution that helps release lime through a process called Nixtamalization are creditable nutrients. When corn undergoes this as WGR grains. process it is considered WGR in Child *Corn products must be made from whole grain Nutrition Programs. corn, be treated with slaked lime (nixtamalized), or be enriched to be creditable in Child Nutrition Programs. To check if corn has been nixtamalized, refer to the following phrases found on an ingredient list: • Treated with lime • Ground corn treated with lime • Ground corn with trace of lime • Calcium hydroxide Slaked lime and lime (citrus fruit) flavor are not the same. -
A Comparative Study of Protein Changes in Normal and Quality Protein Maize During Tortilla Making
A Comparative Study of Protein Changes in Normal and Quality Protein Maize During Tortilla Making ENRIQUE I. ORTEGA,' EVANGELINA VILLEGAS,I and SURINDER K. VASAL2 ABSTRACT Cereal Chem. 63(5):446-451 Protein changes were evaluated in two different maize genotypes of as nitrogen content increased in the glutelin fraction and in the residue after contrasting protein quality made into tortillas. In both types of maize, fractionation. Tortillas made from quality protein maize (QPM) had a albumins, globulins, zeins, and glutelinlike components became insoluble superior amino acid score mainly because of their very high lysine and after interacting with other biochemical entities catalyzed by the alkaline tryptophan content, which was not significantly affected during tortilla pH and the heat produced in tortilla-making. Increased nitrogen recovery preparation. The superiority of the product obtained with the QPM sample with solvents having alkaline pH, a reducing agent, and sodium dodecyl was demonstrated by its high content of available lysine. Although the in sulfate indicate that hydrophobic interactions may have been involved in vitro digestibility of protein with pepsin and the amount of availablelysine this change in solubility of proteins that are more easily solubilized in the changed during tortilla-making, no evidence was found of a specific unprocessed maize grain. In vitro protein digestibility with pepsin declined detrimental effect on the protein quality of the original QPM grain. Improving the protein quality of cereal grains has been a major Various researchers have investigated nixtamalization and other concern of agricultural scientists for the last two decades. Mutant aspects of tortilla making. Chemical changes that occur during the germ plasm with high levels of lysine has been identified in maize lime treatment of corn (Bressani and Scrimshaw 1958) and during (Mertz et al 1964), sorghum (Singh and Axtell 1973), and barley preparation of tortillas (Bressani et al 1958) are reported. -
Rethinking the Conquest : an Exploration of the Similarities Between Pre-Contact Spanish and Mexica Society, Culture, and Royalty
University of Northern Iowa UNI ScholarWorks Dissertations and Theses @ UNI Student Work 2015 Rethinking the Conquest : an exploration of the similarities between pre-contact Spanish and Mexica society, culture, and royalty Samantha Billing University of Northern Iowa Let us know how access to this document benefits ouy Copyright ©2015 Samantha Billing Follow this and additional works at: https://scholarworks.uni.edu/etd Part of the Latin American History Commons Recommended Citation Billing, Samantha, "Rethinking the Conquest : an exploration of the similarities between pre-contact Spanish and Mexica society, culture, and royalty" (2015). Dissertations and Theses @ UNI. 155. https://scholarworks.uni.edu/etd/155 This Open Access Thesis is brought to you for free and open access by the Student Work at UNI ScholarWorks. It has been accepted for inclusion in Dissertations and Theses @ UNI by an authorized administrator of UNI ScholarWorks. For more information, please contact [email protected]. Copyright by SAMANTHA BILLING 2015 All Rights Reserved RETHINKING THE CONQUEST: AN EXPLORATION OF THE SIMILARITIES BETWEEN PRE‐CONTACT SPANISH AND MEXICA SOCIETY, CULTURE, AND ROYALTY An Abstract of a Thesis Submitted in Partial Fulfillment of the Requirements for the Degree Master of Arts Samantha Billing University of Northern Iowa May 2015 ABSTRACT The Spanish Conquest has been historically marked by the year 1521 and is popularly thought of as an absolute and complete process of indigenous subjugation in the New World. Alongside this idea comes the widespread narrative that describes a barbaric, uncivilized group of indigenous people being conquered and subjugated by a more sophisticated and superior group of Europeans. -
5 Techniques for Prediction of Subsidence, by Germán Figueroa Vega, Soki Yamamoto, and Working Group (Section 5.3.6 by Donald C
5 Techniques for prediction of subsidence, by Germán Figueroa Vega, Soki Yamamoto, and Working Group (Section 5.3.6 by Donald C. Helm) It is very important to predict the amount of subsidence and to estimate the subsidence rate in the near future. There are many methods for predicting the amount of land subsidence due to the overdraft of fluids from aquifers. Some methods are simple and others are complex. It is preferable to use several methods whenever possible and to reach a conclusion based on the overall judgment. Both adequate and accurate data are required to obtain useful results, although these depend on the purpose, time length of the forecast, and cost. The methods used may be classified into the following categories: (1) Empirical methods; (2) semi-theoretical approach; (3) theoretical approach. 5.1 EMPIRICAL METHODS This is the method of extrapolating available data to derive the future trend. It is a time series model. The amount of subsidence, the amount of compaction, and sometimes tidal height near the sea coast, are available to plot against time. In this method, the amount of subsidence is considered a function of time, ignoring causality of land subsidence. 5.1.1 Extrapolation of data by naked eye No explanation of this procedure is needed except that a smooth curve with a natural trend should be obtained. 5.1.2 Application of some suitable curve: Nonlinear extrapolation 1. Fitting of quadratic function (Figure 5.1): The following function is used and the least squares method is applied: s = ax2 + bx + c, or s = ax + b,(5.1) where s = subsidence amount, x = time, and a, b, and c are constants. -
Nixtamalization Was Developed in Ancient Mesoamerica Sometime Before 1200BCE
History The process of nixtamalization was developed in ancient mesoamerica sometime before 1200BCE. As corn cultivation spread from mesoamerica the technology of nixtamalization spread with it. Different tribes and cultures used and continue to use different materials and details in the overall process. While European colonizers in the north adopted the cultivation of corn, they didn't widely adopt the process of nixtamalization, this has contributed to several historical outbreaks of pellagra, a nutrient deficiency disease caused by the lack of niacin. The word nixtamalization comes from the Nahuatl (Aztec) word nixtamalli, a compound word comprised of the words for ashes and unformed corn dough. Benefits Nixtamalization has several benefits: • Changes texture of corn dough, allowing a suitable texture for tortillas (compare the texture of corn bread to tortillas) • Changes and enhances flavor and aroma • Depending on the alkali used, adds significant amounts of calcium or potassium, as well as other potential minerals in smaller amounts. • Converts niacytin to bio-available niacin (vitamin B3) • Destroys toxins produced by molds that commonly effect drying corn Equipment: Essential: • Non-reactive Pot (stainless steel or glass) • Some form of strainer, ideally with larger holes. A over-the-sink strainer made from 1/4" mesh seems to be ideal. • Some way to grind the corn, if desired. A purpose built grinder can be ordered for around $20 on eBay (search for corn grinder) or from www.westonsupply.com, but you can also get decent results from a food processor or blender. • Frying pan, ideally cast iron, if you want to make tortillas. Optional: • Tortilla press, balls of tortilla dough can be rolled out with a rolling pin, or squished under a flat bottom casserole dish, but a tortilla press makes them quicker and easier. -
Date: Artist: Period/Style: Patron
TITLE:Frontispiece of the codex LOCATION: New Spain (AKA Mexico) DATE: 1541-1542 Mendoza ARTIST: Viceroyalty of New Spain PERIOD/STYLE: Colonial American Art PATRON: Antonio de Mendoza MATERIAL/TECHNIQUE: Ink and color on paper FORM: The Codex Mendoza is a history of the Mexica (a.k.a. Aztec) people and the growth of their empire. The Frontispiece of the Codex Mendoza features an eagle perched on a cactus, which represents the founding of Tenochtitlan, the site of present-day Mexico City. The gods told the Mexica people that such a sighting would show them where to settle. The year was 1325 when the Mexica people went in search of the site of their future home. Led by Tenoch, who can be seen to the left of the eagle with his own cactus behind him, the Mexica ended up settling on an island in the middle of Lake Texcoco. FUNCTION: the Codex Mendoza contains the history of Mexica conquests over the Colhuacan and Tenoyucan, a list of tributes paid by the tribes they conquered, and details of everyday life. The document was sent via ship to Spain, where it was supposed to reach King Charles. However, French pirates captured the ship and took the Codex as booty. The Codex eventually found its way to a member of the French court, Andre Thevet, who was King Henry II’s official cosmographer. Thevet decided to write his name on the Codex in a number of different places, adding yet another layer to its history. Later, it ended up in English hands in the library at Oxford Universi- ty. -
A BRIEF HISTORY of MEXICO the Classic Period to the Present
A BRIEF HISTORY OF MEXICO The Classic Period to the Present Created by Steve Maiolo Copyright 2014 Table of Contents Chapter 1: Section 1: The Maya The Mayan Creation Myth ........................................................................ 1 Ollama ..................................................................................................... 1 Mayan Civilization Social Hierarchy ....................................................................................... 2 Religion ................................................................................................... 3 Other Achievements ................................................................................ 3 The Decline of the Mayans ...................................................................... 3 Section 2: The Aztecs The Upstarts ............................................................................................ 4 Tenochtitlàn ............................................................................................. 4 The Aztec Social Hierarchy Nobility (Pipiltin) ....................................................................................... 5 High Status (not nobility) .......................................................................... 5 Commoners (macehualtin) ....................................................................... 6 Slaves ...................................................................................................... 6 Warfare and Education ........................................................................... -
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RAINFALL USE TO IMPROVE THE SUSTAINABILITY OF THE HYDRAULIC SYSTEM IN THE VALLEY OF MEXICO Isaias Badillo-Piña, Enrique Orduñez-Zavala Ricardo Tejeida-Padilla Instituto Politécnico Nacional México Emails: [email protected], eorduñ[email protected], [email protected] ABSTRACT This paper is a complementary part of previous papers dealing with water issues in México City and its suburbs. Specifically addresses the system of rain water collecting, as there is still plenty of rainwater volumes which has features to satisfies the needs of the city. After a brief description of the hydrological system characteristics of the valley in order to give an idea of the potential of the sustainability of the rain water resources, it is proposed a set of short and long range actions to retain larger volumes of rain water: a) Construction of underground and surfaces tanks and / or semi-underground storages, b) Construction of an underground and distribution ring storage tank, c) Construction of dams, d) Construction of wells for adsorption, e) Massive cobbled of secondary streets, f) Storage of rainwater in houses, g) Massive reforestation of originally forested areas and construction of new forests, h) Protection of soil with litter i) Construction of a special rain water sewage. Keywords: rain water, México Valley, hydrology, systemic sustainability INTRODUCTION During the last few years, the water service to the Valley of Mexico, especially potable water supply to Mexico City and its suburbs, has been studying and this paper suggest feasible alternatives to increase storage of rainwater, in order to improve and maintain quality of service in a sustainable manner.