A moringa extract containing a benzyl glucosinolate in a content of 6% by mass or more, calculated as a dry solid content of the extract, wherein the extract does not substantially contain an alkaloid. The moringa extract of the present invention for solving a first aspect is useful in the field of foodstuff or the like. Also, the PPAR activator of the present invention for solving a second aspect has excellent PPAR activation action, and has no disadvantages in side effects, so that it can be ingested for long term, which can be preferably used in foodstuff and the like. Therefore, the PPAR activator of the present invention for solving a second aspect can be expected to be used as a food, a supplement or a medicament not only for prevention of disease such as insulin resistance, hyperinsulinism, Type 2 diabetes, hypertension, hyperlipidemia, arterial sclerosis and obesity, but also for fatigue recovery or endurance improvement by improving basal metabolism. In addition, a benzyl glucosinolate-containing composition for solving a third aspect is useful in the field of foodstuff or the like.