Marvin J. Yiengst dies biochemist was known for prize-winning wines

April 05, 1991

A memorial service for Marvin J. Yiengst, a retired biochemist who was known for his winemaking, will be held at 1 p.m. tomorrow at his home at 6701 Rosemont Ave.

Mr. Yiengst, who was 83, died Sunday at Good Samaritan Hospital. He had a heart attack after a long illness.

He retired in 1972 after working 38 years for the National Institutes of Health, where he had written or co-written 35 published professional papers.

He also learned glass blowing and made customized laboratory equip

ment for himself and co-workers.

Earlier, he worked for the United States Department of Agriculture and was an officer in the Army Air Forces during World War II.

The Lebanon, Pa., native was a 1929 graduate of Albright College in Reading, Pa.

He began making wines, using a commercial concentrate, in the early '60s and later used 5-gallon glass jugs to make dry grape wines and apple, peach and pear wines.

He won best-of-show prizes several times at the Maryland State Fair and from the American Wine Society.

He taught winemaking to several people who turned professional and to a group of 11 people known as Marv's Group, which met for many years at his home for lectures and wine tastings.

He is survived by his wife, the former Mabel A. Bloom; four stepdaughters, Dorothy Caswell of Fallston, Diane Rohm of Severna Park, Kathleen Schafer of Salisbury and Roseanne Bloom of Kalispell, Mont.; a sister, Helen Angeletti of Armaugh, Pa.; 12 stepgrandchildren; and four stepgreat-grandchildren.

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