Business Notes PERESTROIKA

Bloomingdale's takes pride in introducing chic fashions to trend-hungry New Yorkers, so it seemed perfectly appropriate that the department store was the first in town to sell the latest product of perestroika: imported Soviet rye bread, hot off the flight from Moscow. Bloomingdale's last week was selling the two-pound loaves (price: $6) at the rate of 30 an hour.

Two types were offered: Rjanog, a sour rye, and Borodinsky, a sweeter bread - flavored with coriander. The so-called peace bread was also being offered to customers at the posh Waldorf-Astoria hotel and the Russian Tea Room. U.S. entrepreneur Fred Kayden arranged the imports after 7 1/2 months of negotiations with Soviet officials and a "perestroika entrepreneur" in Moscow. But Kayden may not have a black-bread monopoly for long. Zaro's Bread Basket, a New York City bakery chain, plans to start selling imported Soviet bread for $5 a loaf. Would Muscovites pay that kind of price for Wonder bread?