Nutrition and FunctionThere are many types of nori, including Amanori, Iwanori, Aonori, Egonori, and Ogonori, but the most common type used for grilled or seasoned nori is Amanori (sweet seaweed). Dried nori is made by washing laver thoroughly, cutting it into small pieces, squeezing it, dehydrating it, and then drying it on a bamboo blind . Nowadays, with the progress of industrialization, more and more dried nori is being made using machines. ○Nutritional properties Nori is a highly nutritious food that is packed with vitamins, minerals, and other nutrients. In particular, carotene is converted into vitamin A in the body. Vitamin A has an effect on the entire body, and it helps differentiate the epithelial tissue that covers the skin, cornea of the eye, oral cavity , stomach, intestines, etc., and keeps mucous membranes healthy. If you are deficient in vitamin A , your eyes will lose moisture, your skin will become dry, your digestive organs will be damaged, and you will be more likely to catch colds. In recent years, it has been discovered that carotene protects the body from active oxygen and prevents cancer. It also prevents the oxidation of bad cholesterol and helps prevent arteriosclerosis. (Vitamin B12 prevents anemia, and calcium strengthens bones) Vitamin B12 works together with folic acid to produce red blood cells and keeps nerves functioning normally. A deficiency of vitamin B12 can lead to pernicious anemia. Calcium, together with magnesium and other elements, helps form bones and teeth and maintain health, as well as calming nervous excitement and stabilizing the mind. A deficiency can lead to weak bones, lower back pain, stiff shoulders, and osteoporosis . Nori is also rich in magnesium, which, along with calcium, supports nerve function. Cooking tips:When selecting laver, look for one that is shiny, dark purple in color, uniform in thickness, and has a pleasant fragrance. The laver from the Ariake Sea and the Seto Inland Sea is famous. Store it in a can or other airtight container. If it absorbs moisture, you can roast it over a fire to make it crispy. It is perfect as a condiment for onigiri, temaki sushi, soba, or udon. ・Iwanori: A colloquial name for natural Amanori. While cultivated Amanori grows in inland seas, Iwanori grows on rocks facing the open sea. For this reason, it is characterized by its hardness and strong seashore scent. It is available in both dried and freeze-dried varieties. ・Green laver: It grows in coastal areas, bays, and river mouths all over Japan. The one at the mouth of the Shimanto River is particularly famous. It has a vivid green color and a unique fragrance, and powdered green laver is used in snacks such as rice crackers, okonomiyaki, and yakisoba. ・Egonori: A type of seaweed with agar properties. Dried egonori is boiled and dissolved, then solidified and called "Okiuto" (Hakata) or "Egoneri" (Sado). It is cut into bite-sized pieces and eaten with mustard vinegar miso, sanbai vinegar, or as a salad. ・Gracilus oryzae: This seaweed is often served as a garnish for sashimi. It is also called "ogo," "ugo," or "nagoya." It is a dull purple-brown color in the ocean, but turns green when soaked in lime water or boiling water. It is often salted and used in salads and as a garnish after desalting. Source: Shogakukan Medical Museum of Food Information |
《栄養と働き》ノリは、アマノリ、イワノリ、アオノリ、エゴノリ、オゴノリなどいろいろありますが、焼きノリや味付けノリになるもっとも一般的なものはアマノリ(甘海苔)です。 干しノリは、アマノリをよく洗ってから細かくカットし、すいて脱水し、簾(すだれ)の上にのせ乾燥させたもの。いまは工業化がすすみ、機械を使って製造した干しノリがふえています。 ○栄養成分としての働き ノリは、ビタミンやミネラルなどの成分が凝縮されている高密度栄養食品といえます。 とくに、カロテンは体内でビタミンAにかわります。Aの作用は全身におよび、皮膚や目の角膜(かくまく)、口腔(こうくう)、胃腸などをおおう上皮組織の分化に働き、粘膜(ねんまく)を健康に保たせます。不足すると目は潤いをなくし、肌がかさつき、消化器官が損なわれ、かぜをよくひくようになります。 近年、カロテンは活性酸素から体をまもり、発がんを予防することがわかってきました。悪玉コレステロールの酸化を防ぎ、動脈硬化の予防に役立ちます。 〈貧血を予防するビタミンB12、骨を丈夫にするカルシウム〉 ビタミンB12は、葉酸(ようさん)と協力しあい赤血球の産生に働くほか、神経を正常に働かせます。不足すると悪性貧血になることがあります。 カルシウムは、マグネシウムなどとともに骨や歯を形成し、健康を維持するほか、神経の興奮を鎮め、精神を安定させます。 不足すると、ひいては骨質が薄弱となり、腰痛、肩こり、骨粗鬆症(こつそしょうしょう)におちいります。 ノリには、カルシウムとともに神経の働きを支えるマグネシウムも多いのが特徴です。 《調理のポイント》アマノリを選ぶときは、黒紫色でつやがあり、厚さが均一、香りのよいものを。有明海や瀬戸内海産のアマノリが有名です。 缶などの密封できる容器に保存しましょう。もし湿気を吸ったら、火であぶるとパリっとします。おにぎりや手巻き寿司、そばやうどんの薬味に最適です。 ・イワノリ/天然アマノリの俗称。養殖ものが内海で育つのに対し、イワノリは外海に面した岩に付着。そのためかたく磯の香りも強いのが特徴。素干しと凍結乾燥ものがあります。 ・アオノリ/日本各地の沿岸部や湾、河口部に生育します。とくに四万十川(しまんとがわ)河口のものが有名。鮮やかな緑色で、独特の香りもあり、粉末にしたアオノリはせんべいなどのお菓子や、お好み焼き、焼きそばなどに用いられます。 ・エゴノリ/寒天質をもった海藻。乾燥したエゴノリを煮溶かし、凝固させたものを「おきうと」(博多)、「えごねり」(佐渡)と呼びます。適度な大きさに切り、からし酢味噌や三杯酢、和えものにして食べます。 ・オゴノリ/刺身のつまとして登場する海藻です。「おご」「うご」「なごや」ともいいます。海中ではくすんだ紫褐色ですが、石灰水か熱湯につけると緑色に。塩蔵品が多く、塩ぬきしてからサラダやつまなどに使います。 出典 小学館食の医学館について 情報 |
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