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Food Science and Technology Series, Vol 15 [Fennema, Owen R.]
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It is calculated that, on average, 7% of human energy is derived from sugars spl
it from
polysaccharides by microorganisms in the large intestine and/or from the acid by
-products produced from them by these microorganisms via anaerobic fermentation
.
皮均来说，人体7%的能量，来自大肠中糖类被细菌分解而再吸收的热量
大肠吸收率是比小肠低，但是食糜在小肠停留约3-5小时，在大肠得停留多久，则需要看个
人的排便习惯。大肠里面也有MGAT3, 也可以很好的从停留物吸收脂肪。
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https://pubmed.ncbi.nlm.nih.gov/23647171/
https://www.google.com/url?sa=t&source=web&rct=j&url=https://zakboekdietetiek.nl
/wp-content/uploads/2019/07/2013-JHND-absorptie-gezondenNWierdsma.pdf&ved=2ahUKE
wiy8oq0ydz0AhWGd94KHQMBBLMQFnoECAkQAQ&usg=AOvVaw0ZvcgLukiU67emGrSnqR9h
N J Wierdsma et al. J Hum Nutr Diet. 2014 Apr
实验中，研究人员对23名健康对象的排泄物的检查，（平均摄取热量为男生2427大卡，女生
1865大卡）发现其中一位女性排出了53公克的碳水化合物和1536kj=366大卡的热量
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真的是很强
而总体人员平均，排泄的热量占了大概10%（里面也有很不会拉的），约200大卡，而且研究
反映出了，排泄热量的多少，不取决于是男女胖瘦
基本上刺激大便的蠕动冲有
https://en.wikipedia.org/wiki/Peristalsis
Although the large intestine has peristalsis of the type that the small intestin
e uses, it is not the primary propulsion. Instead, general contractions called m
ass action contractions occur
“one to three times per day”
in the large intestine, propelling the chyme (now feces) toward the rectum.
“Mass movements often tend to be triggered by meals, ”
as the presence of chyme in the stomach and duodenum prompts them (gastrocolic r
eflex). Minimum peristalsis is found in the rectum part of large intestine as a
result of thinnest muscularis layer.
吃东西本来就会刺激大便的蠕动冲，特别是早上醒来时有一次比较强烈的蠕动冲，吃东西喝
咖啡又会引起蠕动冲，对不好大便的人来说可以利用这一点培养排便的规律反应跟排便的运
动力唤起，越上越顺。