{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://protein-fact.com/#organization",
      "name": "Protein Fact",
      "url": "https://protein-fact.com",
      "description": "プロテインに関する科学的事実を、論文・数値・製品スペックに基づいて解説する独立メディア。",
      "publishingPrinciples": "https://protein-fact.com/editorial-policy"
    },
    {
      "@type": "WebSite",
      "@id": "https://protein-fact.com/#website",
      "name": "Protein Fact",
      "url": "https://protein-fact.com",
      "publisher": {
        "@id": "https://protein-fact.com/#organization"
      },
      "inLanguage": "ja"
    },
    {
      "@type": "Article",
      "@id": "https://protein-fact.com/guides/domestic-vs-imported-wpi-comparison#article",
      "headline": "国産WPIと海外WPIは何が違うか — 製造国・原料原産国・認証で比較",
      "description": "「国産プロテイン」の多くは原料WPI原末を米国・NZ・欧州から輸入し国内で加工している。国産は国内製造を指し原料原産国ではない。製造国・原料原産国・第三者認証・トレーサビリティ公表度を各社公式情報で比較する。",
      "datePublished": "2026-05-29T00:00:00.000Z",
      "dateModified": "2026-05-29T00:00:00.000Z",
      "keywords": "WPI, 国産プロテイン, 製造国, 原料原産国, 第三者認証, FSSC22000, トレーサビリティ",
      "publisher": {
        "@id": "https://protein-fact.com/#organization"
      },
      "mainEntityOfPage": {
        "@id": "https://protein-fact.com/guides/domestic-vs-imported-wpi-comparison"
      },
      "isPartOf": {
        "@id": "https://protein-fact.com/#website"
      }
    },
    {
      "@type": "BreadcrumbList",
      "@id": "https://protein-fact.com/guides/domestic-vs-imported-wpi-comparison#breadcrumb",
      "itemListElement": [
        {
          "@type": "ListItem",
          "position": 1,
          "name": "Protein Fact",
          "item": "https://protein-fact.com"
        },
        {
          "@type": "ListItem",
          "position": 2,
          "name": "ガイド・比較",
          "item": "https://protein-fact.com/guides"
        },
        {
          "@type": "ListItem",
          "position": 3,
          "name": "国産WPIと海外WPIは何が違うか — 製造国・原料原産国・認証で比較"
        }
      ]
    }
  ]
}