scholarly journals THE EFFECT OF HEATING TIME TO THE CONTENT OF PIGMENTS AND VITAMIN A IN CASSAVA (Manihot esculenta Crantz) AND CEARA-RUBBER (Manihot glaziovii Muell. Arg) LEAVES

2010 ◽  
Vol 7 (1) ◽  
pp. 105-110
Author(s):  
Madalena Madalena ◽  
Heriyanto Heriyanto ◽  
Susanti Pudji Hastuti ◽  
Leenawaty Limantara
Keyword(s):  
Vitamin A ◽  
Manihot Esculenta ◽  
Main Product ◽  
Heating Time ◽  
Heating Process ◽  
Manihot Esculenta Crantz ◽  
Cooking Process ◽  
Manihot Glaziovii ◽  
Product Degradation

Cassava and ceara-rubber leaves are leavy vegetables that can not be consumed in raw form because they contained cyanide, therefore cooking process is needed to remove the cyanide.  However cooking process cause the changes of  the content of pigments and vitamin A. The aims of the research are to know and to compare the effect of heating time to the content of pigments and vitamin A in cassava and ceara-rubber leaves. Content of chlorophyll and carotenoid was analized base of Porra and Lichtenthaler equations, respectively, while pheophytin content was analyzed base on HPLC. The result shown that the content of chlorophylls, carotenoids and vitamin A of cassava and ceara-rubber leaves were reduced, while the content of pheophytin was increased during heating. Pheophytin was the main product degradation of chlorophyll during heating of cassava and ceara-rubber leaves.   Keywords: heating process, cassava, pigment, vitamin A.

scholarly journals FORMULASI FLAKES UBI KAYU (Manihot esculenta Crantz) SEBAGAI PENGGANTI SARAPAN YANG BERPOTENSI ANTIOKSIDAN

2015 ◽  
Vol 5 (1) ◽  
pp. 1-10
Author(s):  
Eka Herlina ◽  
Farida Nuraeni
Keyword(s):  
Vitamin E ◽  
Vitamin A ◽  
Vitamin C ◽  
Manihot Esculenta ◽  
Manihot Esculenta Crantz

Diversifikasi produk pangan merupakan salah satu cara untuk menunjang ketahanan pangan. Ubi kayu (Manihot esculenta Crantz) dapat digunakan sebagai bahan pangan alternatif pengganti beras yang diolah menjadi flakes. Salah satu komponen bioaktif pada ubikayu yaitu skopoletin suatu senyawa fenolik yang mempunyai aktivitas antioksidan. Penelitian ini dilakukan dengan cara mensubstitusi tepung ubi kayu pada pembuatan flakesubi kayu menggunakan tepung kacang merah dengan berbagai perbandingan tepung ubikayu : tepung kacang merah yaitu 5:0, 4:1, 3:2, 2:3 dan 1:4. Produk olahan dianalisiskandungan vitamin C, A, E, tingkat penerimaan dengan uji organoleptik dan uji aktivitasantioksidan dengan metode DPPH (1,1-difenil-2-pikrilhidrazil). Analisis kadar vitamin Cmenggunakan metode spektrofotometri, sedangkan vitamin A dan E dengan metode HPLC.Hasil penelitian menunjukkan flakes ubi kayu dengan penambahan tepung kacang merahpada formula flakes 3:2 merupakan formulasi yang lebih disukai oleh panelis, dengankandungan vitamin C 5,23 ppm, vitamin A 166,05 IU/100 gram, nilai IC50397,06 ppm, dantidak mengandung vitamin E.

scholarly journals Sexual dimorphism and the effect of wild introgressions on recombination in cassava (Manihot esculenta Crantz) breeding germplasm

2021 ◽  
Author(s):  
Ariel W Chan ◽  
Seren S Villwock ◽  
Amy L Williams ◽  
Jean-Luc Jannink
Keyword(s):  
Manihot Esculenta ◽  
Genotyping By Sequencing ◽  
Genetic Maps ◽  
International Institute ◽  
Tropical Agriculture ◽  
Recombination Rates ◽  
Manihot Esculenta Crantz ◽  
Suppressed Recombination ◽  
Manihot Glaziovii ◽  
Breeding Germplasm

Abstract Recombination has essential functions in meiosis, evolution, and breeding. The frequency and distribution of crossovers dictate the generation of new allele combinations and can vary across species and between sexes. Here, we examine recombination landscapes across the 18 chromosomes of cassava (Manihot esculenta Crantz) with respect to male and female meioses and known introgressions from the wild relative Manihot glaziovii. We used SHAPEIT2 and duoHMM to infer crossovers from genotyping-by-sequencing (GBS) data and a validated multi-generational pedigree from the International Institute of Tropical Agriculture (IITA) cassava breeding germplasm consisting of 7,020 informative meioses. We then constructed new genetic maps and compared them to an existing map previously constructed by the International Cassava Genetic Map Consortium (ICGMC). We observed higher recombination rates in females compared to males, and lower recombination rates in M. glaziovii introgression segments on chromosomes 1 and 4, with suppressed recombination along the entire length of the chromosome in the case of the chromosome 4 introgression. Finally, we discuss hypothesized mechanisms underlying our observations of heterochiasmy and crossover suppression and discuss the broader implications for plant breeding.

scholarly journals Sexual dimorphism and the effect of wild introgressions on recombination in cassava (Manihot esculenta Crantz) breeding germplasm

2021 ◽  
Author(s):  
Jean-Luc Jannink ◽  
Ariel W. Chan ◽  
Seren St. Clair Villwock ◽  
Amy L Williams
Keyword(s):  
Manihot Esculenta ◽  
Genotyping By Sequencing ◽  
Genetic Maps ◽  
International Institute ◽  
Tropical Agriculture ◽  
Recombination Rates ◽  
Manihot Esculenta Crantz ◽  
Suppressed Recombination ◽  
Manihot Glaziovii ◽  
Breeding Germplasm

Recombination has essential functions in meiosis, evolution, and breeding. The frequency and distribution of crossovers dictate the generation of new allele combinations and can vary across species and between sexes. Here, we examine recombination landscapes across the 18 chromosomes of cassava (Manihot esculenta Crantz) with respect to male and female meioses and known introgressions from the wild relative Manihot glaziovii. We used SHAPEIT2 and duoHMM to infer crossovers from genotyping-by-sequencing (GBS) data and a validated multi-generational pedigree from the International Institute of Tropical Agriculture (IITA) cassava breeding germplasm consisting of 7,020 informative meioses. We then constructed new genetic maps and compared them to an existing map previously constructed by the International Cassava Genetic Map Consortium (ICGMC). We observed higher recombination rates in females compared to males, and lower recombination rates in M. glaziovii introgression segments on chromosomes 1 and 4, with suppressed recombination along the entire length of the chromosome in the case of the chromosome 4 introgression. Finally, we discuss hypothesized mechanisms underlying our observations of heterochiasmy and crossover suppression and discuss the broader implications for plant breeding.

scholarly journals UV-visible scanning spectrophotometry and chemometric analysis as tools for carotenoids analysis in cassava genotypes (Manihot esculenta Crantz)

2015 ◽  
Vol 12 (4) ◽  
pp. 27-38
Author(s):  
Rodolfo Moresco ◽  
Virgílio G. Uarrota ◽  
Aline Pereira ◽  
Maíra Tomazzoli ◽  
Eduardo da C. Nunes ◽  
...  
Keyword(s):  
Vitamin A ◽  
Manihot Esculenta ◽  
High Performance ◽  
Vitamin A Deficiency ◽  
Chemometric Analysis ◽  
Manihot Esculenta Crantz ◽  
Data Set ◽  
Health And Nutrition ◽  
Uv Visible ◽  
Β Carotene

Summary In this study, the metabolomics characterization focusing on the carotenoid composition of ten cassava (Manihot esculenta) genotypes cultivated in southern Brazil by UV-visible scanning spectrophotometry and reverse phase-high performance liquid chromatography was performed. Cassava roots rich in β-carotene are an important staple food for populations with risk of vitamin A deficiency. Cassava genotypes with high pro-vitamin A activity have been identified as a strategy to reduce the prevalence of deficiency of this vitamin. The data set was used for the construction of a descriptive model by chemometric analysis. The genotypes of yellow-fleshed roots were clustered by the higher concentrations of cis- β-carotene and lutein. Inversely, cream-fleshed roots genotypes were grouped precisely due to their lower concentrations of these pigments, as samples rich in lycopene (redfleshed) differed among the studied genotypes. The analytical approach (UV-Vis, HPLC, and chemometrics) used showed to be efficient for understanding the chemodiversity of cassava genotypes, allowing to classify them according to important features for human health and nutrition.

β-Carotene from cassava (Manihot esculenta Crantz) leaves improves vitamin A status in rats

2007 ◽  
Vol 146 (1-2) ◽  
pp. 235-240 ◽  
Author(s):  
Egle Machado de Almeida Siqueira ◽  
Sandra Fernandes Arruda ◽  
Rodrigo Martins de Vargas ◽  
Elizabeth Maria Talá de Souza
Keyword(s):  
Vitamin A ◽  
Manihot Esculenta ◽  
Manihot Esculenta Crantz ◽  
Vitamin A Status ◽  
Β Carotene

Pro-vitamin A carotenoids stability and bioaccessibility from elite selection of biofortified cassava roots (Manihot esculenta, Crantz) processed to traditional flours and porridges

2018 ◽  
Vol 9 (9) ◽  
pp. 4822-4835 ◽  
Author(s):  
Ingrid J. Aragón ◽  
Hernán Ceballos ◽  
Dominique Dufour ◽  
Mario G. Ferruzzi
Keyword(s):  
Vitamin A ◽  
Thermal Processing ◽  
Manihot Esculenta ◽  
Manihot Esculenta Crantz ◽  
Processing Effects ◽  
The Stability ◽  
Elite Selection ◽  
Selection Of

The effects of fermentation and thermal processing on the stability and bioaccessibility of pVAC from elite selections of biofortified cassava roots were assessed to determine the potential for genotype x processing effects.

CONCENTRADO PROTEICO OBTIDO DAS FOLHAS DE MANDIOCA (Manihot esculenta Crantz) DE TRÊS VARIEDADES COMERCIAIS.

2017 ◽  
Vol 13 (1) ◽  
Author(s):  
Izabel Aparecida Soares ◽  
Mauro Sérgio Téo ◽  
Carlise DEBASTIANI ◽  
Suzymeire BARONI ◽  
Vanessa Silva RETUCI
Keyword(s):  
Manihot Esculenta ◽  
Crude Protein ◽  
Hydrocyanic Acid ◽  
Protein Concentrate ◽  
Manihot Esculenta Crantz ◽  
White Variety ◽  
Mean Values ◽  
Randomized Design ◽  
Significant Difference ◽  
The Mean

O trabalho teve por objetivo verificar diferenças entre rendimento do concentrado proteico e proteína bruta da folha da mandioca (Manihot esculenta Crantz), obtidos a partir de três variedades comerciais: branca, cascuda e vermelha. As manivas foram plantadas seguindo o delineamento experimental inteiramente casualizado com três repetições. Nas comparações entre as variedades, considerou coletas escalonadas pós-plantio, realizadas aos 12, 14 e 16 meses. O concentrado proteico foi obtido a partir da farinha das folhas inteiras e submetido ao método de termo - coagulação ácido e a proteína bruta pelo método padrão AOAC. Os dados foram submetidos a análise de variância e comparados pelo teste de Tukey - 5% de probabilidade. Os resultados não indicaram diferença significativa entre as médias obtidas para rendimento de concentrado proteico. Para a variável porcentagem de proteína bruta a variedade Branca foi a que apresentou maior valor, com média de 46,25%, seguida pela Cascuda e Vermelha, 44,52% e 37,30%, sucessivamente. Conclui-se que outros estudos devem avaliar condições que possam influenciar no teor de proteína foliar, como clima e solo, e, avaliar os níveis de ácido cianídrico de cada variedade, indicando qual das três é a melhor para a extração do concentrado proteico das folhas. Palavras chaves: Manihot esculenta Crantz, variedades comerciais, concentrado proteico, proteína bruta. ABSTRACT: The study aimed to assess the differences between income protein concentrate, crude protein of cassava leaf (Manihot esculenta Crantz), obtained from three commercial varieties: white, red and cascuda. The cuttings were planted following the completely randomized design with three replications. Comparisons between the varieties considered after planting staggered collections, held on 12, 14 and 16 months. The protein concentrate was obtained from flour of whole sheets and subjected to the term method - acid coagulation and crude protein by AOAC standard method. The data were submitted to ANOVA and Tukey test - 5% probability. The results indicated no significant difference between the mean values obtained for protein concentrate income. For the variable percentage of crude protein White variety showed the highest, with an average of 46.25%, followed by cascuda and Red, 44.52% and 37.30%, successively. We conclude that further studies should evaluate conditions that may affect the leaf protein content, such as climate and soil, and evaluate the hydrocyanic acid levels of each variety, indicating which of the three is the best for the extraction of protein concentrate from leaves Key words: Manihot esculenta Crantz, commercial varieties, protein concentrate, crude protein.

Rancang Bangun Alat Olahan Minyak Kelapa

2016 ◽  
Vol 10 (1) ◽  
pp. 70-77
Author(s):  
Jantri Sirait ◽  
Sulharman Sulharman
Keyword(s):  
Electric Motor ◽  
Performance Test ◽  
Production Capacity ◽  
Coconut Oil ◽  
Heating Time ◽  
Design Tool ◽  
Coconut Milk ◽  
Heating Process ◽  
And Performance ◽  
Time Required

Has done design tool is a tool of refined coconut oil coconut grater, squeezer coconut milk and coconut oil heating, with the aim to streamline the time of making coconut oil and coconut oil increase production capacity. The research method consists of several stages, among others; image creation tool, procurement of materials research, cutting the material - the material framework of tools and performance test tools. The parameters observed during the performance test tools is time grated coconut, coconut milk bleeder capacity, the capacity of the boiler and the heating time of coconut oil. The design tool consists of three parts, namely a tool shaved coconut, coconut milk wringer and coconut milk heating devices. Materials used for the framework of such tools include iron UNP 6 meters long, 7.5 cm wide, 4 mm thick, while the motor uses an electric motor 0.25 HP 1430 rpm and to dampen the rotation electric motor rotation used gearbox with a ratio of round 1 : 60. the results of the design ie the time required for coconut menyerut average of 297 seconds, coconut milk wringer capacity of 5 kg of processes and using gauze pads to filter coconut pulp, as well as the heating process takes ± 2 hours with a capacity of 80 kg , The benefits of coconut oil refined tools are stripping time or split brief coconut average - average 7 seconds and coconut shell can be used as craft materials, processes extortion coconut milk quickly so the production capacity increased and the stirring process coconut oil mechanically.ABSTRAKTelah dilakukan rancang bangun alat olahan minyak kelapa yaitu alat pemarut kelapa, pemeras santan kelapa dan pemanas minyak kelapa, dengan tujuan untuk mengefisiensikan waktu pembuatan minyak kelapa serta meningkatkan kapasitas produksi minyak kelapa. Metode penelitian terdiri dari beberapa tahapan antara lain; pembuatan gambar alat, pengadaan bahan-bahan penelitian, pemotongan bahan - bahan rangka alat dan uji unjuk kerja alat. Parameter yang diamati pada saat uji unjuk kerja alat adalah waktu parut kelapa, kapasitas pemeras santan kelapa, kapasitas tungku pemanas serta waktu pemanasan minyak kelapa. Rancangan alat terdiri dari tiga bagian yaitu alat penyerut kelapa, alat pemeras santan kelapa dan alat pemanas santan kelapa. Bahan yang dipergunakan untuk rangka alat tersebut  yaitu besi UNP panjang 6 meter, lebar 7,5 cm, tebal 4 mm, sedangkan untuk motor penggerak menggunakan motor listrik 0,25 HP 1430 rpm dan untuk meredam putaran putaran motor listrik dipergunakan gearbox  dengan perbandingan putaran 1 : 60. Hasil dari rancangan tersebut yaitu waktu yang dibutuhkan untuk menyerut kelapa rata-rata 297 detik, kapasitas alat pemeras santan kelapa 5 kg sekali proses dan menggunakan kain kassa untuk menyaring ampas kelapa, serta Proses pemanasan membutuhkan waktu ± 2 jam dengan kapasitas 80 kg. Adapun keunggulan alat olahan minyak kelapa ini adalah waktu pengupasan atau belah kelapa singkat rata – rata 7 detik dan tempurung kelapa dapat digunakan sebagai bahan kerajinan, proses pemerasan santan kelapa cepat sehingga kapasitas produksi meningkat dan proses pengadukan minyak kelapa secara mekanis. Kata kunci : penyerut, pemeras, pemanas,minyak kelapa,olahan minyak kelapa.

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