1

votes

satsumaimo (japanese variety) versus sweet potato (american orange variety)

Answered on August 19, 2014
Created June 29, 2012 at 10:50 AM

Im trying to get the straight dope on calorie info for these two. I live in Japan, and eat Satsumaimo. In Japanese Kanji, its says 100g raw yields 132 calories. But the regular orange fleshed sweet potato on the USDA nutrient database yields 86 calories for the same amount raw.

What gives? Are these two not related sweet potato varieties, thus, should they not yield similar calories?

Any help would be appreciated.

Medium avatar

(2417)

on January 29, 2013
at 12:59 PM

Japanese sweet potatoe diet? Never heard of it. Calories in calories out. Calculate and adjust accordingly to gain lose. Yes, they are one and the same at the Korean market.

Medium avatar

(2923)

on October 20, 2012
at 06:27 AM

They are related, but they've been bred differently. It's like comparing bell peppers and jalapeños - they're both chiles ...

Medium avatar

(2923)

on October 20, 2012
at 06:22 AM

More trivia: purple Okinawan sweet potatoes have more anthocyanin than blueberries ...

Medium avatar

(2923)

on October 20, 2012
at 06:21 AM

Add in Mark's Daily Apple's Visual Guide to Yams and Sweet Potatoes: http://www.marksdailyapple.com/difference-yams-sweet-potatoes/

Medium avatar

(2417)

on October 20, 2012
at 05:04 AM

The latter is correct.

Ce7e28769d92d5de5533e775b1de966e

on June 30, 2012
at 06:50 PM

Ach - you never mentioned leangains in the post - important to know all the deets, including all the components that would make a 500 calorie difference. Oh well, at least you have some good info for your next trivia match :) Good luck!

Ce7e28769d92d5de5533e775b1de966e

on June 30, 2012
at 03:57 PM

Ach - you never mentioned leangains in the post - important to know all the deets :) Also.. calorie count you gave only shows a difference between 86 v 132? Well, at least you have some good info for your next trivia match :) Good luck!

Ce7e28769d92d5de5533e775b1de966e

on June 30, 2012
at 03:11 PM

Ach - you never mentioned leangains in the post :) Calorie count you gave only shows a difference between 86 v 132.. not sure about the 500 but I was basing it off of a 46 calorie difference :) Good luck!

Medium avatar

(2417)

on June 30, 2012
at 04:36 AM

Good point. I felt I was getting the higher value I'd found. When I read the lower value, it meant I was eating 500 fewer calories per workout day, which didn't seem right.

Medium avatar

(2417)

on June 30, 2012
at 04:34 AM

Well, I do stress about it; hence my question. I count calories. It makes me comfortable. I know where I've been, so I can plan where I'm going. Now I'm doing Leangains, which has VERY specific calorie requirements to be calculated. The difference in the two values I read make a whopping 500 CALORIE DIFFERENCE in my workout day!

Ce7e28769d92d5de5533e775b1de966e

on June 29, 2012
at 05:28 PM

I loves me some sweet potatoes, gotta represent!

5ccb98f6ae42ce87e206cf3f6a86039f

(11581)

on June 29, 2012
at 03:39 PM

+1 Great answer.

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4 Answers

5
Ce7e28769d92d5de5533e775b1de966e

on June 29, 2012
at 03:17 PM

First, this might help: See if this helps at all: http://paleohacks.com/questions/92959/nutrition-differences-in-different-varieties-of-sweet-potatoes#axzz1z6UFW9Zh

And the North Caroline Sweet Potato Commission

Everything you ever wanted to know about Japanese sweet potatoes - these by the way are the ones I eat 90% of the time. If eating sweet potatoes, any varieties, aren't inhibiting your goals in any way - the calories are close enough that I wouldn't stress about it.

Nerd Alert - the calories may be off due to a labeling error, thank you interwebs!

Americans have been making the mistake of calling sweet potatoes "yams." But there's actually a difference. It turns out sweet potatoes and yams are not even related. They are two different species of root vegetable with very different backgrounds and uses.

So why the confusion? The U.S. government has perpetuated the error of labeling sweet potatoes "yams." In most cases sweet potatoes are labeled with both terms, which just adds to the confusion. Since there are two types of sweet potatoes, one with creamy white flesh and one with orange, the USDA labels the orange-fleshed ones "yams" to distinguish them from the paler variety. Ok, so that sort of makes sense. But why call the orange-fleshed ones "yams" in the first place?

Sweet potatoes (Ipomoea batatas) come in two main varieties here in the States. One has a golden skin with creamy white flesh and a crumbly texture. The other has a copper skin with an orange flesh that is sweet and soft. All sweet potato varieties generally have the same shape and size -- they are tapered at the ends and much smaller than the aforementioned yams.

Americans have been calling the orange-fleshed variety of sweet potatoes "yams" since colonial times when Africans saw familiarities in them to the tuberous variety. The USDA decided to label them as "yams" to differentiate the two varieties.

Yams (family Dioscoreaceae) are native to Africa and Asia and other tropical regions. Yams are starchy tubers that have an almost black bark-like skin and white, purple or reddish flesh and come in many varieties. The tubers can be as small as regular potatoes or grow upwards of five feet long.

The word yam comes from an African word, which means "to eat." The yam holds great importance as a foodstuff because it keeps for a long time in storage and is very valuable during the wet season, when food is a scarcity.

Ce7e28769d92d5de5533e775b1de966e

on June 29, 2012
at 05:28 PM

I loves me some sweet potatoes, gotta represent!

Medium avatar

(2417)

on June 30, 2012
at 04:34 AM

Well, I do stress about it; hence my question. I count calories. It makes me comfortable. I know where I've been, so I can plan where I'm going. Now I'm doing Leangains, which has VERY specific calorie requirements to be calculated. The difference in the two values I read make a whopping 500 CALORIE DIFFERENCE in my workout day!

Ce7e28769d92d5de5533e775b1de966e

on June 30, 2012
at 03:11 PM

Ach - you never mentioned leangains in the post :) Calorie count you gave only shows a difference between 86 v 132.. not sure about the 500 but I was basing it off of a 46 calorie difference :) Good luck!

5ccb98f6ae42ce87e206cf3f6a86039f

(11581)

on June 29, 2012
at 03:39 PM

+1 Great answer.

Ce7e28769d92d5de5533e775b1de966e

on June 30, 2012
at 03:57 PM

Ach - you never mentioned leangains in the post - important to know all the deets :) Also.. calorie count you gave only shows a difference between 86 v 132? Well, at least you have some good info for your next trivia match :) Good luck!

Ce7e28769d92d5de5533e775b1de966e

on June 30, 2012
at 06:50 PM

Ach - you never mentioned leangains in the post - important to know all the deets, including all the components that would make a 500 calorie difference. Oh well, at least you have some good info for your next trivia match :) Good luck!

Medium avatar

(2923)

on October 20, 2012
at 06:21 AM

Add in Mark's Daily Apple's Visual Guide to Yams and Sweet Potatoes: http://www.marksdailyapple.com/difference-yams-sweet-potatoes/

1
5e92edc5a180787a60a252a8232006e9

(345)

on June 29, 2012
at 03:16 PM

The Japanese one is starchier than the orange Southern yams. If you compare the taste, you'll immediately recognize the difference. The orange yams taste a bit diluted, while the Japanese ones are denser. Those purple Okinawan ones even more so. There are differences among myriad sweet potato varieties, including taste, starchiness and the amount of beta carotene. And that shouldn't surprise you.

Medium avatar

(2417)

on June 30, 2012
at 04:36 AM

Good point. I felt I was getting the higher value I'd found. When I read the lower value, it meant I was eating 500 fewer calories per workout day, which didn't seem right.

Medium avatar

(2923)

on October 20, 2012
at 06:22 AM

More trivia: purple Okinawan sweet potatoes have more anthocyanin than blueberries ...

0
Dcd23794db7972dd3a68722b21ccbf29

on January 28, 2013
at 10:36 PM

Does the Japanese sweet potato diet even work since these potatoes are very caloric? And are these the same potatoes that I get in the Korean market? I buy them in the Japanese and Korean markets and they look the same..

Medium avatar

(2417)

on January 29, 2013
at 12:59 PM

Japanese sweet potatoe diet? Never heard of it. Calories in calories out. Calculate and adjust accordingly to gain lose. Yes, they are one and the same at the Korean market.

0
60951aec544c95b7ca0d2746d8a2b663

on October 20, 2012
at 12:36 AM

Im still confused, so what is the right value 86 calories or 132 per 100g?

Medium avatar

(2417)

on October 20, 2012
at 05:04 AM

The latter is correct.

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