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[[Berkas:Mangga gedong gincu 071021-0845 tmo.jpg|jmpl|250px|[[Buah]], seperti [[mangga]], mengandung serat pangan yang baik bagi [[kesehatan]].]]
'''Serat pangan''', dikenal juga sebagai '''serat [[diet]]''' atau '''''dietary fiber''''', merupakan bagian dari [[tumbuhan]] yang dapat di[[konsumsi]] dan tersusun dari [[karbohidrat]] yang memiliki sifat resistan terhadap proses pencernaan dan penyerapan di [[usus halus]] [[manusia]] serta mengalami [[fermentasi]] sebagian atau keseluruhan di [[usus besar]].<ref name="Meyer"/>
Serat pangan mencakup [[polisakarida]], oligosakarida, [[lignin]], serta substansi lainnya yang berhubungan dengan tumbuhan.<ref name="Meyer">{{en}} {{cite journal
| author = AACC Report
| editor =
| date =
| year = 2001
| month =
| title = The Definition of Dietary Fibre
| trans_title =
| journal = Cereal Foods World
| volume = 46
| issue =
| series =
| pages = pp. 89-148
| publisher =
| location =
| issn = 0146-6283
| pmid =
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| doi =
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| id =
| url = http://www.aaccnet.org/DietaryFiber/pdfs/dietfiber.pdf
| language = English
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</ref> Trowell ''et al.'' (1985) mendefiniskan serat pangan adalah sisa dari [[dinding]] sel [[tumbuhan]] yang tidak terhidrolisis atau tercerna oleh [[enzim]] pencernaan [[manusia]] yaitu meliputi [[hemiselulosa]], [[selulosa]], [[lignin]], [[oligosakarida]], [[pektin]], gum, dan lapisan lilin.<ref name="Trowell 1">{{en}} {{cite journal
| author = Trowell HC
| editor =
| date =
| year = 1976
| month =
| title = Definition of dietary fiber and hypotheses that it is a protective factor in certain diseases
| trans_title =
| journal = The American Journal of Clinical Nutrition
| volume = 29
| issue =
| series =
| pages = 417-427
| publisher = American Society for Nutrition
| location =
| issn =
| pmid = 773166
| pmc =
| doi =
| bibcode =
| oclc =
| id =
| url = http://www.ajcn.org/cgi/content/abstract/29/4/417
| language = English
| format =
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}}
</ref> <ref name="Trowell 2">{{en}} {{cite journal
| author = Trowell HC, Southgate D, Wolever T, Leeds A, Gassull M, Jenkins D
| editor =
| date =
| year = 1976
| month =
| title = Dietary fiber re-defined
| trans_title =
| journal = Lancet
| volume = 307
| issue = 7966
| series =
| pages = 967
| publisher =
| location =
| issn =
| pmid =
| pmc =
| doi = 10.1016/S0140-6736(76)92750-1
| bibcode =
| oclc =
| id =
| url = http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T1B-49MDWTV-1N0&_user=6763742&_coverDate=05%2F01%2F1976&_rdoc=42&_fmt=high&_orig=browse&_srch=doc-info(%23toc%234886%231976%23996922033%23457541%23FLP%23display%23Volume)&_cdi=4886&_sort=d&_docanchor=&view=c&_ct=65&_acct=C000070526&_version=1&_urlVersion=0&_userid=6763742&md5=34142970e69f39298007a54779f1f496
| language = English
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</ref> Sedangkan Meyer (2004) mendefinisikan serat sebagai bagian integral dari bahan pangan yang dikonsumsi sehari-hari dengan sumber utama dari tanaman, sayur-sayuran, [[sereal]], buah-buahan, kacang-kacangan, dsb.<ref name="Meyer">{{en}} {{cite journal
| author = Meyer PD
| editor =
| date =
| year = 2004
| month =
| title = Nondigestible oligosaccharides as dietary fiber
| trans_title =
| journal = Journal of the Association of Official Analytical Chemists International
| volume = 87(3)
| issue =
| series =
| pages = 718-726
| publisher = AOAC International
| location =
| issn =
| pmid = 15287671
| pmc =
| doi =
| bibcode =
| oclc =
| id =
| url =
| language = English
| format =
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}}
</ref> Berdasarkan kelarutannya serat pangan terbagi menjadi dua yaitu serat pangan yang terlarut dan tidak terlarut.<ref name="Meyer"/> Serat pangan terlarut meliputi [[pektin]], beta glukan, galaktomanan, gum, serta beberapa oligosakarida yang tidak tercerna termasuk inulin didalamnya, sedangkan serat tidak larut meliputi [[lignin]], [[selulosa]], dan hemiselulosa.<ref name="Meyer"/>
== Manfaat ==
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