Ukrainian Deputy Prime Minister Vladimir Groisman confirmed that the victims' remains would be stored in refrigerated railway coaches.
They are to be taken to a laboratory in Kharkiv, more than 250 kilometres north of the crash site and far from rebel-held territory.
He said there were about 900 insurgents around the site near the village of Grabovo where the United States says MH17 was shot down by a surface-to-air missile, killing all 298 passengers and crew aboard the Boeing 777-200 bound for Kuala Lumpur from Amsterdam.
Ukrainian emergency services said they had recovered 196 of the 298 bodies so far, but a spokesman said the search operations were under surveillance and impeded by armed separatists.
DPA