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 | "Descrizione" by Ottika11 (2065 pt) | 2019-Aug-27 18:52 |
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Arborio rice (Oryza sativa var japonica) is a variety of white rice with large grains mainly used in risottos.
Considering the protein content in the commercial classification (1), Arborio rice was placed in the lower class, with 19% Amylose (polysaccharide sugar), but with a high content, 6.8%, of proteins.
Low (compared to other species of rice) also the content of Gamma oryzanol with 864.4 mgKg-1DW (2).
Rice is a grass and one of the most common and oldest foods. Just think that its history dates back 7,000 years.
It is harvested from September to October from a small plant called Oryza, which is fed by flooded soil.
The genus Oryza has many species, here some of the best known:
Italy is the first European producer with crops in the provinces of Vercelli, Novara, Pavia, Biella, Milan, Lodi and others.
The rice is composed of the grain and its husk and husk wrapper.
Once harvested, it is not edible and must be worked to remove the husk and other parts.
After the processing that is called dehusking you get the
Wholemeal rice, with a subsequent refining process, is used to produce the
The varieties of rice are numerous, over 100,000 and each has different taste and cooking times.
In general, rice contains more than 100 bioactive substances mainly in its bran layer including phytic acid, isovitexin, gamma-oryzanol, phytosterols, octacosanol, squalene, gamma-aminobutyric acid, tocopherol and derived from tocotrienol (3), antioxidants.
It does not contain beta carotene (provitamin A) and has a very low iron and zinc content (4).
In rice bran there are bioactive phytochemicals that exert protective actions against cancer that involve the metabolism of the host and the intestinal microbiome. A diet based on rice bran has shown positive effects in reducing the risk of colon cancer (5).
Allergies: Be careful, rice contains a certain amount of lactose.
The most common types of rice used are :
Rice viruses and pests: Pseudomonas aeruginosa, Rice yellow mottle virus, Magnaporthe oryzae , Rice Tungro Bacilliform Virus , Lissorhoptrus oryzophilus Kuschel, Oebalus pugnax, Xanthomonas oryzae
References________________________________
(1) Suwannaporn P, Pitiphunpong S, Champangern S. Classification of rice amylose content by discriminant analysis of physicochemical properties. Starch. 2007;59:171–177. doi: 10.1002/star.200600565
(2) Deep sequencing transcriptional fingerprinting of rice kernels for dissecting grain quality traits Chiara Biselli, Paolo Bagnaresi, Daniela Cavalluzzo, Simona Urso, Francesca Desiderio, Gabriele Orasen, Alberto Gianinetti, Federico Righettini, Massimo Gennaro, Rosaria Perrini, Manel Ben Hassen, Gian Attilio Sacchi, Luigi Cattivelli, and Giampiero Valè BMC Genomics. 2015 Dec 21;16:1091. doi: 10.1186/s12864-015-2321-7.
(3) Bidlack W. Phytochemicals as bioacive agents. Lancaster, Basel, Switzerland: Technomic Publishing Co., Inc; 1999. pp. 25–36.
(4) Single genetic locus improvement of iron, zinc and β-carotene content in rice grains. - Singh SP, Gruissem W, Bhullar NK. - Sci Rep. 2017 Jul 31;7(1):6883. doi:10.1038/s41598-017-07198-5.
(5) Modulation of plasma and urine metabolome in colorectal cancer survivors consuming rice bran. Zarei I, Oppel RC, Borresen EC, Brown RJ, Ryan EP. Integr Food Nutr Metab. 2019 May;6(3). doi: 10.15761/IFNM.1000252.
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